Proto-Greek language

The Proto-Greek language (also known as Proto-Hellenic) is the Indo-European language which was the last common ancestor of all varieties of Greek, including Mycenaean Greek, the subsequent ancient Greek dialects (i.e., Attic, Ionic, Aeolic, Doric, Arcadocypriot, and ancient Macedonian—either a dialect or a closely related Hellenic language) and, ultimately, Koine, Byzantine and Modern Greek (along with its variants). Proto-Greek speakers entered Greece sometime between 2200 and 1900 BC, with the diversification into a southern and a northern group beginning by approximately 1700 BC.

Proto-Greek
Proto-Hellenic
Reconstruction of	Hellenic languages / Ancient Greek dialects
Region	Southern Balkan Peninsula
Era	c. 2200–1900 BC (appearance in the Greek peninsula) c. 1700 BC (diversification)
Reconstructed ancestor	Proto-Indo-European

Proto-Greek area of settlement (2200/2100-1900 B.C.) suggested by Katona (2000), Sakellariou (2016, 1980, 1975) and Phylaktopoulos (1975)

View about "Proto-Greek area" in the 3rd millennium BC, reconstructed by Vladimir I. Georgiev (1973 & 1981). The boundaries are based on the high concentration of archaic Greek place-names in the region in contrast to southern Greece which preserves many pre-Greek. Modern consensus is that pre-Proto-Greek and other IE languages split from PIE only after 2500 BC, with proto-Greek forming in the proto-Greek area during the Early Helladic III period (c. 2200–2000 BC).

Origins

Proto-Greek emerged from the diversification of the late Proto-Indo-European language (PIE); a process whose last phase gave rise to the later language families and occurred c. 2500 BC. Pre-Proto-Greek, the Indo-European dialect from which Proto-Greek originated, emerged c. 2400 – c. 2200 BC, in an area which bordered pre-Proto-Indo-Iranian to the east and pre-Proto-Armenian and pre-Proto-Phrygian to the west, at the eastern borders of southeastern Europe; according to the Kurgan hypothesis. Speakers of what would become Proto-Greek, migrated from their homeland (which could have been northeast of the Black Sea), and reached Greece in a date set around the transition of the Early Bronze Age to the Middle Bronze Age. The evolution of Proto-Greek could be considered within the context of an early Paleo-Balkan sprachbund that makes it difficult to delineate exact boundaries between individual languages. The characteristically Greek representation of word-initial laryngeals by prothetic vowels is shared, for one, with the Armenian language, which also seems to share some other phonological and morphological peculiarities of Greek; this has led some linguists to propose a hypothetically closer relationship between Greek and Armenian, although evidence remains scant.

According to Filos (2014), the emergence of Proto-Greek was a long and continuous linguistic evolution, as the predecessors of Greek speakers were migrating towards the outskirts of Greece, somewhere to the north(-west) of the Greek peninsula proper, where they eventually merged with pre-Greek populations to form the Proto-Greek language. A. L. Katona (2000) places the beginning of the migration from Ukraine towards the south c. 2400 – c. 2300 BC. Their proposed route of migration passed through Romania and the eastern Balkans to the Evros river valley from where their main body moved west. As such Katona as well as M.V Sakellariou agree that the main body of Greek speakers settled in a region that included southwestern Illyria, Epirus, northwestern Thessaly and western Macedonia.

Older theories like those of Vladimir I. Georgiev placed Proto-Greek in northwestern Greece and adjacent areas (approximately up to the Aulon river to the north), including Parauaea, Tymphaia, Athamania, Dolopia, Amphilochia, and Acarnania, as well as west and north Thessaly (Histiaeotis, Perrhaibia, Tripolis), and Pieria in Macedonia, during the Late Neolithic. The boundaries are based on the high concentration of archaic Greek place-names in the region, in contrast to southern Greece which preserves many pre-Greek.Radoslav Katičić considered these findings highly significant, and agreed that due to the minimal traces of pre-Greek toponymy in the region, Epirus and western Thessaly must have formed the region of concentration of Proto-Greek speakers, before their spread southwards. However, the dating of proto-Greek in Bronze Age Greece is compatible with the inherited lexicon from the common Proto-Indo-European language, which excludes any possibility of it being present in Neolithic Greece.

In modern bibliography, models about the settlement and development of proto-Greek speakers in the Greek peninsula place it in the region at the earliest around 2200–2000 BC, during the Early Helladic III. Asko Parpola and Christian Carpelan (2005) date the arrival of Proto-Greek speakers into the Greek peninsula to 2200 BC,^: 131 while Carl Blegen (1928) dates it to c. 1900 BC.

Diversification

Ivo Hajnal dates the beginning of the diversification of Proto-Greek into the subsequent Greek dialects to a point not significantly earlier than 1700 BC. The conventional division of the Greek dialects prior to 1955 differentiated them between a West Greek (consisting of Doric and Northwest Greek) and an East Greek (consisting of Aeolic, Arcado-Cypriot, and Attic-Ionic) group. However, after the decipherment of the Linear B script, Walter Porzig and Ernst Risch argued for a division between a Northern (consisting of Doric, Northwest Greek, and Aeolic) and a Southern (consisting of Mycenaean, Arcado-Cypriot, and Attic-Ionic) group, which remains fundamental until today.

During this period of c. 1700 BC, South Greek-speaking tribes spread to Boeotia, Attica, and the Peloponnese, while North Greek was spoken in Epirus, Thessaly, parts of Central Greece, and perhaps also Macedonia.

Phonology

Proto-Greek is reconstructed with the following phonemes:

Consonants Type Labial Alveolar Palatal Velar Labiovelar Glottal Nasal m n ɲ Plosive p b pʰ t d tʰ ť ď k g kʰ kʷ gʷ kʷʰ Affricate ts dz Fricative s h Liquid l r ľ ř Semivowel j w

Vowels Type Front Center Back Close i ī u ū Mid e ē ə o ō Open a ā Diphthongs are ai ei oi ui, au eu ou, āi ēi ōi, and possibly āu ēu ōu; all are allophonic with the corresponding sequences of vowel and semivowel. Exactly one vowel in each word bears a pitch accent (equivalent to the Attic Greek acute accent).

1. Occurs geminated only as the result of palatalization ČČ < Cy; ť also occurs in the combination pť < py
2. Exact phonetic value uncertain

Proto-Greek changes

The primary sound changes separating Proto-Greek from the Proto-Indo-European language include the following.

Consonants

• Delabialization of labiovelars next to /u/, the "boukólos rule". This was a phonotactic restriction already in Proto-Indo-European, and continued to be productive in Proto-Greek. It ceased to be in effect when labiovelars disappeared from the language in post-Proto-Greek.
• Centumization: Merger of palatovelars and velars.
• Merging of sequences of velar + *w into the labiovelars, perhaps with compensatory lengthening of the consonant in one case: PIE *h₁éḱwos > PG *híkkʷos > Mycenaean i-qo /híkkʷos/, Attic híppos, Aeolic íkkos.
• Debuccalization of /s/ to /h/ in intervocalic and prevocalic positions (between two vowels, or if word-initial and followed by a vowel). Loss of prevocalic *s was not completed entirely, evidenced by sȳ́s ~ hȳ́s "pig" (from PIE *suh₁-), dasýs "dense" and dásos "dense growth, forest"; *som "with" is another example, contaminated with PIE *ḱom (Latin cum; preserved in Greek kaí, katá, koinós) to Mycenaean ku-su /ksun/, Homeric and Old Attic ksýn, later sýn. Furthermore, sélas "light in the sky, as in the aurora" and selḗnē/selā́nā "moon" may be more examples of the same if it derived from PIE *swel- "to burn" (possibly related to hḗlios "sun", Ionic hēélios < *sāwélios).
• Strengthening of word-initial y- to dy- > dz- (note that Hy- > Vy- regularly due to vocalization of laryngeals).
• Filos argues for a "probable" early loss of final non-nasal stop consonants: compare Latin quid and Sanskrit cid with Greek ti; however, Mycenaean texts are inconclusive in offering evidence on this matter, as the Linear B script did not explicitly mark final consonants. However, it appears that these stops were preserved word finally for unstressed words, reflected in ek "out of".
• Final /m/ > /n/.
• Syllabic resonants *m̥ *n̥ *l̥ and *r̥ that are not followed by a laryngeal are resolved to vowels or combinations of a vowel and consonantal resonant. This resulted in an epenthetic vowel of undetermined quality (denoted here as *ə). This vowel then usually developed into a but also o in some cases. Thus:
  • *m̥, *n̥ > *ə, but > *əm, *ən before a sonorant. *ə appears as o in Mycenaean after a labial: pe-mo (spérmo) "seed" vs. usual spérma < *spérmn̥. Similarly, o often appears in Arcadian after a velar, e.g. déko "ten", hekotón "one hundred" vs. usual déka, hekatón < *déḱm̥, *sem-ḱm̥tóm.
  • *l̥, *r̥ > *lə, *rə, but *əl, *ər before sonorants and analogously. *ə appears as o in Mycenaean, Aeolic and Arcadocypriot. Example: PIE *str̥-tos > usual stratós, Aeolic strótos "army"; post-PIE *ḱr̥di-eh₂ "heart" > Attic kardíā, Homeric kradíē, Pamphylian korzdia.

Changes to the aspirates

Major changes included:

• Devoicing of voiced aspirates *bʰ, *dʰ, *ɡʰ, *ɡʷʰ to *pʰ, *tʰ, *kʰ, *kʷʰ. This change preceded and fed both stages of palatalization.
• Loss of aspiration before *s, e.g. heksō "I will have" < Post-PIE *seǵʰ-s-oh₂.
• Loss of aspiration before *y, detailed under "palatalization".

Grassmann's law was a process of dissimilation in words containing multiple aspirates. It caused an initial aspirated sound to lose its aspiration when a following aspirated consonant occurred in the same word. It was a relatively late change in Proto-Greek history, and must have occurred independently of the similar dissimilation of aspirates (also known as Grassmann's law) in Indo-Iranian, although it may represent a common areal feature. The change may have even been post-Mycenaean:

1. It postdates the Greek-specific de-voicing of voiced aspirates;
2. It postdates the change of /s/ > /h/, which is then lost in the same environment: ékhō "I have" < *hekh- < PIE *seǵʰ-oh₂, but future heksō "I will have" < *heks- < Post-PIE *seǵʰ-s-oh₂;
3. It postdates even the loss of aspiration before *y that accompanied second-stage palatalization (see below), which postdates both of the previous changes (as well as first-stage palatalization);
4. On the other hand, it predates the development of the first aorist passive marker -thē- since the aspirate in that marker has no effect on preceding aspirates.

Laryngeal changes

Greek is unique among Indo-European languages in reflecting the three different laryngeals with distinct vowels. Most Indo-European languages can be traced back to a dialectal variety of late Proto-Indo-European (PIE) in which all three laryngeals had merged (after colouring adjacent short /e/ vowels), but Greek clearly cannot. For that reason, Greek is extremely important in reconstructing PIE forms.

Greek shows distinct reflexes of the laryngeals in various positions:

• Most famously, between consonants, where original vocalic *h₁, *h₂, *h₃ are reflected as /e/, /a/, /o/ respectively (the so-called triple reflex). All other Indo-European languages reflect the same vowel from all three laryngeals (usually /a/, but /i/ or other vowels in Indo-Iranian):

Proto-Indo-European	Greek	Vedic Sanskrit	Latin
*dʰh₁s- "sacred, religious"	θέσφατος (thésphatos) "decreed by God"	धिष्ण्य (dhíṣṇya-) "devout"	fānum "temple" < *fasnom < *dʰh̥₁s-no-
*sth₂-to- "standing, being made to stand"	στατός (statós)	स्थित (sthíta-)	status
*dh₃-ti- "gift"	δόσις (dósis)	दिति (díti-)	datiō

• An initial laryngeal before a consonant (a *HC- sequence) leads to the same triple reflex, but most IE languages lost such laryngeals and a few reflect them initially before consonants. Greek vocalized them (leading to what are misleadingly termed prothetic vowels): Greek érebos "darkness" < PIE *h₁regʷos vs. Gothic riqiz- "darkness"; Greek áent- "wind" < *awent- < PIE *h₂wéh₁n̥t- vs. English wind, Latin ventus "wind", Breton gwent "wind".
• The sequence *CRHC (C = consonant, R = resonant, H = laryngeal) becomes CRēC, CRāC, CRōC from H = *h₁, *h₂, *h₃ respectively. (Other Indo-European languages again have the same reflex for all three laryngeals: *CuRC in Proto-Germanic, *CiRˀC/CuRˀC with acute register in Proto-Balto-Slavic, *CīRC/CūRC in Proto-Indo-Iranian, *CRāC in Proto-Italic and Proto-Celtic.) Sometimes, CeReC, CaRaC, CoRoC are found instead: Greek thánatos "death" vs. Doric Greek thnātós "mortal", both apparently reflecting *dʰn̥h₂-tos. It is sometimes suggested that the position of the accent was a factor in determining the outcome.
• The sequence *CiHC tends to become *CyēC, *CyāC, *CyōC from H = *h₁, *h₂, *h₃ respectively, with later palatalization (see below). Sometimes, the outcome CīC is found, as in most other Indo-European languages, or the outcome CiaC in the case of *Cih₂C.

All of the cases may stem from an early insertion of /e/ next to a laryngeal not adjacent to a vowel in the Indo-European dialect ancestral to Greek (subsequently coloured to /e/, /a/, /o/ by the particular laryngeal in question) prior to the general merger of laryngeals:

• *CHC > *CHeC > CeC/CaC/CoC.
• *HC- > *HeC- > eC-/aC-/oC-.
• *CRHC > *CReHC > CRēC/CRāC/CRōC; or, *CRHC > *CeRHeC > *CeReC/CeRaC/CeRoC > CeReC/CaRaC/CoRoC by assimilation.
• *CiHC > *CyeHC > CyēC/CyāC/CyōC; or, *Cih₂C > *Cih₂eC > *CiHaC > *CiyaC > CiaC; or, *CiHC remains without vowel insertion > CīC.

A laryngeal adjacent to a vowel develops along the same lines as other Indo-European languages:

• The sequence *CRHV (C = consonant, R = resonant, H = laryngeal, V = vowel) passes through *CR̥HV, becoming CaRV.
• The sequence *CeHC becomes CēC/CāC/CōC.
• The sequence *CoHC becomes CōC.
• In the sequence *CHV (including CHR̥C, with a vocalized resonant), the laryngeal colours a following short /e/, as expected, but it otherwise disappears entirely (as in most other Indo-European languages but not Indo-Iranian whose laryngeal aspirates a previous stop and prevents the operation of Brugmann's law).
• In a *VHV sequence (a laryngeal between vowels, including a vocalic resonant R̥), the laryngeal again colours any adjacent short /e/ but otherwise vanishes early on. That change appears to be uniform across the Indo-European languages and was probably the first environment in which laryngeals were lost. If the first V was *i, *u or a vocalic resonant, a consonantal copy was apparently inserted in place of the laryngeal: *CiHV > *CiyV, *CuHV > *CuwV, *CR̥HV possibly > *CR̥RV, with R̥ always remaining as vocalic until the dissolution of vocalic resonants in the various daughter languages. Otherwise, a hiatus resulted, which was resolved in various ways in the daughter languages, typically by converting i, u and vocalic resonants, when it directly followed a vowel, back into a consonant and merging adjacent non-high vowels into a single long vowel.

Palatalization

Consonants followed by consonantal *y were palatalized, producing various affricate consonants (still represented as a separate sound in Mycenaean) and geminated palatal consonants. Any aspiration was lost in the process. The palatalized consonants later simplified, mostly losing their palatal character. Palatalization occurred in two separate stages. The first stage affected only dental consonants, and the second stage affected all consonants.

First palatalization

The first palatalization replaced post-PIE sequences of dental stop + *y with alveolar affricates:

Before	After
*ty, *tʰy	*t͡s
*dy	*d͡z

The affricate derived from the first palatalization of *ty and *tʰy merged with the outcome of the inherited clusters *ts, *ds and *tʰs, all becoming *t͡s.

Restoration

After the first palatalization changed *ty and *tʰy into *t͡s, the consonant *y was restored after original *t or *tʰ in morphologically transparent formations. The initial outcome of restoration may have been simply *ty and *tʰy, or alternatively, restoration may have yielded an affricate followed by a glide, *t͡sy, in the case of both original *t and original *tʰ. Either way, restored *t(ʰ)y would go on to merge via the second palatalization with the reflex of *k(ʰ)y, resulting in a distinct outcome from the *t͡s derived from the first palatalization. There may also have been restoration of *y after original *d in the same circumstances, but if so, it apparently merged with the *d͡z that resulted from the first palatalization before leaving any visible trace.

However, restoration is not evident in Mycenaean Greek, where the reflex of original *t(ʰ)y (which became a consonant transcribed as ⟨s⟩) is consistently written differently from the reflex of original *k(ʰ)y (which became a consonant transcribed as ⟨z⟩ via the second palatalization).

Second palatalization

The second palatalization took place following the resolution of syllabic laryngeals and sonorants, and prior to Grassmann's law. It affected all consonants followed by the palatal glide *y. The following table, based on American linguist Andrew Sihler, shows the outcomes of the second palatalization:

Before (post-PIE)	After
*py, *pʰy	*pť
*ty, *tʰy (or *t͡sy)	*ťť
*ky, *kʰy
*kʷy, *kʷʰy
(*d͡zy)	*ďď
*gy
*gʷy
*ly	*ľľ
*my, *ny	*ňň
*ry	*řř
*sy > *hy	*yy
*wy	*ɥɥ > *yy

Sihler reconstructs the palatalized stops (shown in the above table as *ť *ď) with a degree of assibilation and transcribes them as *č *ǰ.

The resulting palatal consonants and clusters of Proto-Greek were resolved in varying ways prior to the historical period.

Proto-Greek		Homeric	Attic	West Ionic	Other Ionic	Boeotian, Cretan	Arcadian	Cypriot	Lesbian, Thessalian	Other
*pť		pt
*t͡s	final, initial, after *n, after long vowel or diphthong	s
	after short vowel	s, ss	s			tt	s		ss
*ťť	medial intervocalic	ss	tt		ss	tt	ss
*d͡z, *ďď		zd				dd	zd
*ľľ		ll						i̯l	ll
*ňň	after α, ο	i̯n						unattested	i̯n
	after ε, ι, υ	ːn							nn	ːn
*řř	after α, ο	i̯r
	after ε, ι, υ	ːr						unattested	rr	ːr
*yy		i̯

The restoration of *y after original *t or *tʰ (resulting in *ťť) occurred only in morphologically transparent formations, by analogy with similar formations in which *y was preceded by other consonants. In formations that were morphologically opaque, the restoration did not take place and the *t͡s that resulted from the first palatalization of *ty and *tʰy remained. Hence, depending on the type of formation, the pre-Proto-Greek sequences *ty and *tʰy have different outcomes in the later languages. In particular, medial *t(ʰ)y becomes Attic -s- in opaque formations but -tt- in transparent formations.

The outcome of PG medial *ts in Homeric Greek is s after a long vowel, and vacillation between s and ss after a short vowel: tátēsi dat. pl. "rug" < tátēt-, possí(n)/posí(n) dat. pl. "foot" < pod-. This was useful for the composer of the Iliad and Odyssey, since possí with double s scans as long-short, while posí with single s scans as short-short. Thus the writer could use each form in different positions in a line.

Examples of initial *t͡s:

• PIE *tyegʷ- "avoid" > PG *t͡segʷ- > Greek sébomai "worship, be respectful" (Ved. tyaj- "flee")
• PIE *dʰyeh₂- "notice" > PG *t͡sā- > Dor. sā́ma, Att. sêma "sign" (Ved. dhyā́- "thought, contemplation")

Examples of medial *t͡s (morphologically opaque forms, first palatalization only):

• PreG *tótyos "as much" > PG *tót͡sos > Att. tósos, Hom. tósos/tóssos (cf. Ved. táti, Lat. tot "so much/many")
• PIE *médʰyos "middle" > PG *mét͡sos > Att. mésos, Hom. mésos/méssos, Boeot. méttos, other dial. mésos (cf. Ved. mádhya-, Lat. medius)

Examples of medial *ťť (morphologically transparent forms, first and second palatalization):

• PIE *h₁erh₁-t-yoh₂ "I row" > PG *eréťťō > Attic eréttō, usual non-Attic eréssō (cf. erétēs "oarsman")
• PIE *krét-yōs > PreG *krétyōn "better" > PG *kréťťōn > Attic kreíttōn, usual non-Attic kréssōn (cf. kratús "strong" < PIE *kr̥tús)

For comparison, examples of initial *ť from *k(ʰ)y by the second palatalization:

• PreG *ki-āmerom > PG *ťāmeron > Attic tḗmeron, Ionic sḗmeron, Doric sā́meron
• PreG *kyā-wetes > Attic têtes, Ionic sêtes, Mycenaean za-we-te

For words with original *dy, no distinction is found in any historically attested form of Greek between the outcomes of the first and second palatalizations, and so there is no visible evidence of an opposition between *d͡z and a secondary restored cluster *d͡zy > *ďď. However, it is reasonable to think that words with *dy originally underwent parallel treatment to words with original *ty and *tʰy. The reflex of *dy also merged with the reflex of *g(ʷ)y, with one of the two word-initial reflexes of PIE *y-, and with original *sd, as in PIE *h₃esdos/osdos > όζος 'branch' or PIE *si-sd- > ἵζω 'take a seat'. The merger with *sd was probably post-Mycenaean, but occurred before the introduction of the Greek alphabet.

Vowels

• Osthoff's law: Shortening of long vowels before a sonorant in the same syllable. E.g. *dyēws "skyling, sky god" > Attic Greek Zeús /dzeús/.
• Cowgill's law: Raising of /o/ to /u/ between a resonant and a labial.

Cowgill's law

In Proto-Greek, Cowgill's law says that a former /o/ vowel becomes /u/ between a resonant (/r/, /l/, /m/, /n/) and a labial consonant (including labiovelars), in either order.

Examples:

• Greek: νύξ "night" < PIE *nokʷts (cf. Latin: nox, Ved. nák < *nakts, Gothic: nahts, gen. sg. Hittite: nekuz /nekʷts/)
• Greek: φύλλον "leaf" < PIE *bʰolyom (cf. Latin: folium)
• Greek: μύλη "mill" < PIE *mol-eh₂- (cf. Latin: molīna)
• Greek: ὄνυξ "nail" (stem Greek: ónukh-) < early PG *onokʷʰ- < PIE h₃nogʷʰ- (cf. Old English: nægl < PGerm *nag-laz)

Note that when a labiovelar adjoins an /o/ affected by Cowgill's law, the new /u/ will cause the labiovelar to lose its labial component (as in Greek: núks and Greek: ónuks/ónukh-, where the usual Greek change */kʷ/ > /p/ has not occurred).

Prosody

Proto-Greek retained the Indo-European pitch accent, but developed a number of rules governing it:

• The law of limitation, also known as the trisyllabicity law, confined the freedom of the accents to the final three syllables. Alternatively, it can be analyzed as restraining the accent to be within the last four morae of the word.
• Wheeler's law, which causes oxytone words to become paroxytone when ending in a syllable sequence consisting of heavy-light-light (ex. *poikilós > poikílos).
• Loss of accent in finite verb forms. This probably began in verbs of independent clauses, a development also seen in Vedic Sanskrit, where they behave as clitics and bear no accent. The accentless forms later acquired a default recessive accent, placed as far left as the law of limitation allowed.
  • Certain imperative forms, such as idé "go!", regularly escaped this process and retained their accent.
• Many Proto-Greek suffixes bore lexical stress. Accentuation rules applied post-Proto-Greek such as Vendryes's law and Bartoli's law modified how and if this would surface.

Post-Proto-Greek changes

Sound changes that postdate Proto-Greek, but predate the attested dialects, including Mycenaean Greek, include:

• Loss of s in consonant clusters, with compensatory lengthening of the preceding vowel (Attic, Ionic, Doric) or of the consonant (Aeolic): *ésmi "I am" > ḗmi, eîmi or émmi.
• Creation of secondary s from earlier affricates, *nty > *nts > ns. This was, in turn, followed by a change similar to the one described above, loss of the n with compensatory lengthening: *apónt-ya > apónsa > apoûsa, "absent", feminine.
• In southern dialects (including Mycenaean, but not Doric), -ti- > -si- (assibilation).

The following changes are apparently post-Mycenaean because early stages are represented in Linear B:

• Loss of /h/ (from original /s/), except initially, e.g. Doric níkaas "having conquered" < *níkahas < *níkasas.
• Loss of /j/, e.g. treîs "three" < *tréyes.
• Loss of /w/ in many dialects (later than loss of /h/ and /j/). Example: étos "year" from *wétos.
• Loss of labiovelars, which were converted (mostly) into labials, sometimes into dentals (or velars next to /u/, as a result of an earlier sound change). See below for details. It had not yet happened in Mycenaean, as is shown by the fact that a separate letter ⟨q⟩ is used for such sounds.
• Contraction of adjacent vowels resulting from loss of /h/ and /j/ (and, to a lesser extent, from loss of /w/); more in Attic Greek than elsewhere.
• Rise of a distinctive circumflex accent, resulting from contraction and certain other changes.
• Loss of /n/ before /s/ (incompletely in Cretan Greek), with compensatory lengthening of the preceding vowel.
• Raising of ā to ē /ɛː/ in Attic and Ionic dialects (but not Doric). In Ionic, the change was general, but in Attic it did not occur after /i/, /e/ or /r/. (Note Attic kórē "girl" < *kórwā; loss of /w/ after /r/ had not occurred at that point in Attic.)
• Vendryes's Law in Attic, where a penultimate circumflex accent was retracted onto a preceding light syllable if the final syllable was also light: light-circumflex-light > acute-heavy-light. For example, hetoîmos > Attic hétoimos.
• Analogical prosodic changes that converted a penultimate heavy acute accent to circumflex (retraction by one mora) if both the final and (if present) the preceding syllable were light. This produced alternations within a paradigm, for example Attic oînos "wine" nominative singular, but genitive singular oínou.

Note that /w/ and /j/, when following a vowel and not preceding a vowel, combined early on with the vowel to form a diphthong and so were not lost.

Loss of /h/ and /w/ after a consonant was often accompanied by compensatory lengthening of a preceding vowel.

The development of labiovelars varies from dialect to dialect:

• Due to the PIE boukólos rule, labiovelars next to /u/ had already been converted to plain velars: boukólos "herdsman" < *gʷou-kʷólos (cf. boûs "cow" < *gʷou-) vs. aipólos "goatherd" < *ai(g)-kʷólos (cf. aíks, gen. aigós "goat"); elakhús "small" < *h₁ln̥gʷʰ-ús vs. elaphrós "light" < *h₁ln̥gʷʰ-rós.
• In Attic and some other dialects (but not, for example, Aeolic), labiovelars before some front vowels became dentals. In Attic, kʷ and kʷʰ became t and th, respectively, before /e/ and /i/, while gʷ became d before /e/ (but not /i/). Cf. theínō "I strike, kill" < *gʷʰen-yō vs. phónos "slaughter" < *gʷʰón-os; delphús "womb" < *gʷelbʰ- (Sanskrit garbha-) vs. bíos "life" < *gʷih₃wos (Gothic qius "alive"), tís "who?" < *kʷis (Latin quis).
• All remaining labiovelars became labials, original kʷ kʷʰ gʷ becoming p ph b respectively. That happened to all labiovelars in some dialects like Lesbian; in other dialects, like Attic, it occurred to all labiovelars not converted into dentals. Many occurrences of dentals were later converted into labials by analogy with other forms: bélos "missile", bélemnon "spear, dart" (dialectal délemnon) by analogy with bállō "I throw (a missile, etc.)", bolḗ "a blow with a missile".
• Original PIE labiovelars had still remained as such even before consonants and so became labials also there. In many other centum languages such as Latin and most Germanic languages, the labiovelars lost their labialisation before consonants. (Greek pémptos "fifth" < *pénkʷtos; compare Old Latin quinctus.) This makes Greek of particular importance in reconstructing original labiovelars.

The results of vowel contraction were complex from dialect to dialect. Such contractions occur in the inflection of a number of different noun and verb classes and are among the most difficult aspects of Ancient Greek grammar. They were particularly important in the large class of contracted verbs, denominative verbs formed from nouns and adjectives ending in a vowel. (In fact, the reflex of contracted verbs in Modern Greek, the set of verbs derived from Ancient Greek contracted verbs, represents one of the two main classes of verbs in that language.)

Morphology

Nouns

Proto-Greek preserved the gender (masculine, feminine, neuter) and number (singular, dual, plural) distinctions of the nominal system of Proto-Indo-European. However, the evidence from Mycenaean Greek is inconclusive with regard to whether all eight cases continued to see complete usage, but this is more secure for the five standard cases of Classical Greek (nominative, genitive, dative, accusative and vocative) and probably also the instrumental in its usual plural suffix -pʰi and the variant /-ṓis/ for o-stem nouns. The ablative and locative are uncertain; at the time of Mycenaean texts they may have been undergoing a merger with the genitive and dative respectively. It is thought that the syncretism between cases proceeded faster for the plural, with dative and locative already merged as -si (the Proto-Indo-European locative plural having been *-su-). This merger may have been motivated by analogy to the locative singular -i-. Nevertheless, seven case distinctions are securely attested in Mycenaean in some domain, with the status of the ablative unclear.

Significant developments attributed to the Proto-Greek period include:

• the replacement of PIE nominative plural *-ās and *-ōs by *-ai and *-oi.
• the genitive and dative dual suffix *-oi(i)n (Arcadian -oiun) appears to be exclusive to Greek.
• Genitive singular Proto-Indo-European *-āsyo, if reconstructed as such, is reflected as -āo

The Proto-Greek nominal system is thought to have included cases of gender change according to number, heteroclisy and stem alternation (ex. genitive form húdatos for húdōr "water").

The superlative in -tatos becomes productive.^{[citation needed]}

The peculiar oblique stem gunaik- "women", attested from the Thebes tablets is probably Proto-Greek. It appears, at least as gunai- in Armenian as well.^{[citation needed]}

Examples of noun declension

*agrós, agrójjo (field), m.

Case	Singular	Dual	Plural
Nom.	*agrós < PIE *h₂éǵros	*agrṓ < PIE *h₂éǵroh₁	*agrói < PIE *h₂éǵroes
Gen.	*agróyyo < *h₂éǵrosyo	*agróyyun < ?	*agrṓn < *h₂éǵroHom
Dat.	*agrṓi < *h₂éǵroey	*agróyyun < ?	*agróis < *h₂éǵromos
Acc.	*agrón < *h₂éǵrom	*agrṓ < *h₂éǵroh₁	*agróns < *h₂éǵroms
Voc.	*agré < *h₂éǵre	*agrṓ < *h₂éǵroh₁	*agrói < *h₂éǵroes
Loc.	*agrói, -éi < *h₂éǵroy, -ey	?	*agróihi < *h₂éǵroysu
Instr.	*agrṓ < *h₂éǵroh₁	?	*agrṓis < *h₂éǵrōys

*pʰugā́, pʰugā́s (fugue), f.

Case	Singular	Dual	Plural
Nom.	*pʰugā́ < PIE *bʰugéh₂	*pʰugáe < PIE *bʰugéh₂h₁(e)	*pʰugái < PIE *bʰugéh₂es
Gen.	*pʰugā́s < *bʰugéh₂s	*pʰugáyyun < ?	*pʰugā́ōn < *bʰugéh₂oHom
Dat.	*pʰugā́i < *bʰugéh₂ey	*pʰugáyyun < ?	*pʰugáis < *bʰugéh₂mos
Acc.	*pʰugā́n < *bʰugā́m	*pʰugáe < *bʰugéh₂h₁(e)	*pʰugáns < *bʰugéh₂m̥s
Voc.	*pʰugā́ < *bʰugéh₂	*pʰugáe < *bʰugéh₂h₁(e)	*pʰugái < *bʰugéh₂es
Loc.	*pʰugā́i? < *bʰugéh₂i	?	*pʰugā́hi < *bʰugéh₂su
Instr.	*pʰugā́ < *bʰugéh₂h₁	?	*pʰugā́is < *bʰugéh₂mis

*dzugón, dzugójjo (yoke), n.

Case	Singular	Dual	Plural
Nom.	*dzugón < PIE *yugóm	*dzugṓ < PIE *yugóy(h₁)	*dzugá < PIE *yugéh₂
Gen.	*dzugóyyo < *yugósyo	*dzugóyyun < ?	*dzugṓn < *yugóHom
Dat.	*dzugṓi < *yugóey	*dzugóyyun < ?	*dzugóis < *yugómos
Acc.	*dzugón < *yugóm	*dzugṓ < *yugóy(h₁)	*dzugá < *yugéh₂
Voc.	*dzugón < *yugóm	*dzugṓ < *yugóy(h₁)	*dzugá < *yugéh₂
Loc.	*dzugói, -éi < *yugóy, *-éy	?	*dzugóihi < *yugóysu
Instr.	*dzugṓ < *yugóh₁	?	*dzugṓis < *yugṓys

("Yoke" in later Proto-Hellenic and both Classical and Modern Greek is masculine due to a gender shift from *-ón to *-ós).

Pronouns

The pronouns hoûtos, ekeînos and autós are created. The use of ho, hā, to as articles is post-Mycenaean.^{[citation needed]}

Pronoun	Proto-Hellenic < PIE
I	*egṓ < PIE *éǵh₂; (Homeric Greek egṓn < variant *eǵh₂óm)
You	*tú < *túh₂
He	*autós < *h₂ewtos (from *h₂ew, "again", and *to, "that")
She	*autā́ < *h₂ewtéh₂
It	*autó < *h₂ewtó
We two	*nṓwi < ?
You two	*spʰṓwi < ?
They (two)	*spʰо̄é < ?
We	*əhmé(e)s < *usmé [accusative of *yū́(s)]
You (all)	*uhmé(e)s
They (m.)	? (Attic Greek: autoí)
They (f.)	? (Attic Greek: autaí)
They (n.)	? (Attic Greek: autá)

Verbs

Proto-Greek inherited the augment, a prefix e-, to verbal forms expressing past tense. That feature is shared only with Indo-Iranian and Phrygian (and to some extent, Armenian), lending some support to a "Graeco-Aryan" or "Inner Proto-Indo-European" proto-dialect. However, the augment down to the time of Homer remained optional and was probably little more than a free sentence particle, meaning 'previously' in Proto-Indo-European, which may easily have been lost by most other branches. Greek, Phrygian,^{[contradictory]} and Indo-Iranian also concur in the absence of r-endings in the middle voice, in Greek apparently already lost in Proto-Greek.

The first person middle verbal desinences -mai, -mān replace -ai, -a. The third singular phérei is an innovation by analogy, replacing the expected Doric *phéreti, Ionic *phéresi (from PIE *bʰéreti).

The future tense is created, including a future passive as well as an aorist passive.

The suffix -ka- is attached to some perfects and aorists.

Infinitives in -ehen, -enai and -men are created.

An example of verb in Proto-Hellenic

*ágō (I drive), thematic

Pronoun	Verb (present)
I	*ágō < PIE *h₂éǵoh₂
You	*ágehi < *h₂éǵesi
He, she, it	*ágei < *h₂éǵeti
We two	*ágowos < *h₂éǵowos (*ágowes, *ágowen)
You two	*ágetes < *h₂éǵetes (*ágetos, *ágeton)
They (two)	*ágetes < *h₂éǵetes (*ágetos, *ágeton)
We	*ágomes < *h₂éǵomos (*ágomen)
You (all)	*ágete < *h₂éǵete
They	*ágonti < *h₂éǵonti

*ehmí (to be), athematic

Pronoun	Verb (present)
I	*ehmí < PIE *h₁ésmi
You	*ehí < *h₁ési
He, she, it	*estí < *h₁ésti
We two	*eswén? < *h₁swós
You two	*estón < *h₁stés
They (two)	*estón < *h₁stés
We	*esmén < *h₁smós
You (all)	*esté < *h₁sté
They	*ehénti < *h₁sénti

An example of adjective in Proto-Hellenic

*néwos, -ā, -on (new)

Case (singular)	PIE (singular)	PE (singular)
Nom.	*néwos, néweh₂, néwom	*néwos, néwā, néwon
Gen.	*néwosyo, néweh₂s, néwosyo	*néwoyyo, néwās, néwoyyo
Dat.	*néwoey, néweh₂ey, néwoey	*néwōi, néwāi, néwōi
Acc.	*néwom, néwām, néwom	*néwon, néwān, néwon
Voc.	*néwe, néweh₂, néwom	*néwe, néwa, néwon
Loc.	*néwoy/ey, néweh₂i, néwoy/ey	*néwoi/ei, néwai, néwoi/ei
Instr.	*néwoh₁, néweh₂h₁, néwoh₁	*néwō, néwā, néwō

Case (plural)	PIE (plural)	PE (plural)
Nom.	*néwoes, néweh₂es, néweh₂	*néwoi, néwai, néwa
Gen.	*néwoHom, néweh₂oHom, néwoHom	*néwōn, néwāōn, néwōn
Dat.	*néwomos, néweh₂mos, néwomos	*néwois, néwais, néwois
Acc.	*néwoms, néweh₂m̥s, néweh₂	*néwons, néwans, néwa
Voc.	*néwoes, néweh₂es, néweh₂	*néwoi, néwai, néwa
Loc.	*néwoysu, néweh₂su, néwoysu	*néwoihi, néwāhi, néwoihi
Instr.	*néwōys, néweh₂mis, néwōys	*néwois, néwais, néwois

Numerals

Proto-Greek numerals were derived directly from Indo-European.

• "one": *héns (masculine), *hmía (feminine) (> Myc. e-me /heméi/ (dative); Att./Ion. εἷς (ἑνός), μία, heîs (henos), mía)
• "two": *dúwō (> Myc. du-wo /dúwoː/; Hom. δύω, dúō; Att.-Ion. δύο, dúo)
• "three": *tréyes (> Myc. ti-ri /trins/; Att./Ion. τρεῖς, treîs; Lesb. τρής, trḗs; Cret. τρέες, trées)
• "four": nominative *kʷétwores, genitive *kʷeturṓn (> Myc. qe-to-ro-we /kʷétroːwes/ "four-eared"; Att. τέτταρες, téttares; Ion. τέσσερες, tésseres; Boeot. πέτταρες, péttares; Thess. πίτταρες, píttares; Lesb. πίσυρες, písures; Dor. τέτορες, tétores)
• "five": *pénkʷe (> Att.-Ion. πέντε, pénte; Lesb., Thess. πέμπε, pémpe)
• "six": *hwéks (> Att. ἕξ, héks; Dor. ϝέξ, wéks)
• "seven": *heptə́ (> Att. ἑπτά, heptá)
• "eight": *oktṓ (> Att. ὀκτώ, oktṓ)
• "nine": *ennéwə (> Att. ἐννέα, ennéa; Dor. ἐννῆ, ennê)
• "ten": *dékə (> Att. δέκα, déka)
• "hundred": *hekətón (> Att. ἑκατόν, hekatón)
• "thousand": *kʰéhliyoi (> Att. χίλιοι, khílioi)

Summary of numerals in Proto-Hellenic

Number	PH	PIE
One (1)	*óinos	*h₁óynos
Two (2)	*dúwō	*dwóh₁
Three (3)	*tréyes	*tréyes
Four (4)	*kʷétwores	*kʷetwóres
Five (5)	*pénkʷe	*pénkʷe
Six (6)	*hwéks	*swéḱs
Seven (7)	*heptə́	*septḿ̥
Eight (8)	*oktṓ	*(h₁)oḱtṓw
Nine (9)	*ennéwə	*h₁néwn̥
Ten (10)	*dékə	*déḱm̥
One hundred (100)	*hekətón	*heḱm̥tóm or *h₁ḱm̥tóm (*ḱm̥tóm: "100")
One thousand (1000)	*kʰehliyoi	*ǵʰesliyoy (< *ǵʰéslom, "1000")

See also

• Greeks

Footnotes

1. Drews, Robert (1994). The Coming of the Greeks: Indo-European Conquests in the Aegean and the Near East. Princeton University Press. p. 14. ISBN 0-691-02951-2.
2. West, M. L. (23 October 1997). The East Face of Helicon: West Asiatic Elements in Greek Poetry and Myth: West Asiatic Elements in Greek Poetry and Myth. Clarendon Press. p. 1. ISBN 978-0-19-159104-4. Archived from the original on 26 March 2023. Retrieved 28 September 2020. "the arrival of the Proto-Greek -speakers took place at various sites in central and southern Greece at the beginning and end of the Early Helladic III period.
3. Filos 2014, p. 175.
4. Asko Parpola; Christian Carpelan (2005). "The cultural counterparts to Proto-Indo-European, Proto-Uralic and Proto-Aryan : matching the dispersal and contact patterns in the linguistic and archaeological record". In Edwin Bryant; Laurie L. Patton (eds.). The Indo-Aryan Controversy: Evidence and Inference in Indian History. Psychology Press. pp. 107–141. ISBN 978-0-7007-1463-6. Archived from the original on 2023-03-26. Retrieved 2020-08-21.
5. Hajnal, Ivo (2007). "Die Vorgeschichte der griechischen Dialekte: ein methodischer Rück- und Ausblick". In Hajnal, Ivo; Stefan, Barbara (eds.). Die altgriechischen Dialekte. Wesen und Werden. Akten des Kolloquiums, Freie Universität Berlin, 19.–22. September 2001 (in German). Innsbruck, Austria: Institut für Sprachen und Literaturen der Universität Innsbruck. p. 136. Archived from the original on 2021-10-28. Retrieved 2020-05-06.
6. Georgiev 1981, p. 156: "The Proto-Greek region included Epirus, approximately up to Αὐλών in the north including Paravaia, Tymphaia, Athamania, Dolopia, Amphilochia, and Acarnania), west and north Thessaly (Hestiaiotis, Perrhaibia, Tripolis, and Pieria), i. e. more or less the territory of contemporary northwestern Greece)."
7. Crossland, R. A.; Birchall, Ann (1973). Bronze Age Migrations in the Aegean; Archaeological and Linguistic Problems in Greek Prehistory: Proceedings of the First International Colloquium on Aegean Prehistory, Sheffield. Duckworth. p. 248. ISBN 978-0-7156-0580-6. Archived from the original on 2023-03-26. Retrieved 2021-02-11. Thus in the region defined just above, roughly northern and north-western Greece, one finds only archaic Greek place-names. Consequently, this is the proto-Hellenic area, the early homeland of the Greeks where they lived before they invaded central and southern Greece.
8. Anthony 2010, p. 82.
9. Hall, Jonathan M. (1997). Ethnic Identity in Greek Antiquity. Cambridge University Press. p. 160. ISBN 978-0-521-78999-8. Archived from the original on 2023-03-26. Retrieved 2021-02-11.
10. Woodard, Roger D. (2008). The Ancient Languages of Europe. Cambridge University Press. p. 52. ISBN 978-1-139-46932-6. Archived from the original on 2023-03-26. Retrieved 2021-02-11.
11. Horrocks, Geoffrey (2010). Greek: A History of the Language and its Speakers. John Wiley & Sons. pp. 19–20. ISBN 978-1-4443-1892-0. Archived from the original on 2023-03-26. Retrieved 2021-02-11.
12. Parker, Holt N. (2008). "The Linguistic Case for the Aiolian Migration Reconsidered". Hesperia: The Journal of the American School of Classical Studies at Athens. 77 (3). American School of Classical Studies at Athens: 443–444. doi:10.2972/hesp.77.3.431. ISSN 0018-098X. JSTOR 40205757. S2CID 161497388.
13. A comprehensive overview is in J. T. Hooker's Mycenaean Greece (Hooker 1976, Chapter 2: "Before the Mycenaean Age", pp. 11–33 and passim); for a different hypothesis excluding massive migrations and favoring an autochthonous scenario, see Colin Renfrew's "Problems in the General Correlation of Archaeological and Linguistic Strata in Prehistoric Greece: The Model of Autochthonous Origin" (Renfrew 1973, pp. 263–276, especially p. 267) in Bronze Age Migrations by R. A. Crossland and A. Birchall, eds. (1973).
14. Anthony 2010, p. 81.
15. Anthony 2010, p. 51.
16. Anthony 2010, p. 369.
17. Demand, Nancy (2012). The Mediterranean Context of Early Greek History. Wiley. p. 49. ISBN 978-1-4051-5551-9. Archived from the original on 2023-03-26. Retrieved 2020-08-20.
18. Renfrew 2003, p. 35: "Greek The fragmentation of the Balkan Proto-Indo-European Sprachbund of phase II around 3000 BC led gradually in the succeeding centuries to the much clearer definition of the languages of the constituent sub-regions."
19. Clackson 1995.
20. Filos 2014, p. 175: "The emergence of Proto-Greek happened during a long, continuous linguistic process which involved numerous changes in all major linguistic fields (→ phonology, morphology, → syntax, lexicon), as a migrating population of (soon-to-become) Greek speakers were en route to/on the outskirts of Greece, i.e., somewhere to the north(-west) of the Greek peninsula proper. But Proto-Greek was practically formed after the arrival of its speakers in Greece and their merger with pre-Greek populations (→ Pre-Greek Languages; → Pre-Greek Substrate), as is indicated, inter alia, by the high number of loanwords (e.g. sûkon 'fig') and suffixes (e.g. -nthos, -s(s)os/-ttos) which were borrowed into Proto-Greek (see (6), (7) below)."
21. Katona 2000, p. 84: "The time of the departure of the Proto-Greeks semel is mid EH II (2400/2300 B.C) (L and A available). Their route between Ukraine and Greece can be supposed to have led through Rumania and East Balkans towards the Hebros-vallev (North-Eastern Greece). Here they turned to the West (A available)."
22. Katona 2000, pp. 84–86: "Contacts must have existed, too, until 1900 B.C., when Western tribes lived in Epirus, Southwest Illyria and Western Macedonia, i.e. in the western neighborhood of the Ionians... The main body of the Proto-Greeks – as seen already in Sakellariou 1980 – had settled in southwest Illyria, Epirus, Western Macedonia, and northwestern Thessaly."
23. Georgiev 1981, p. 192: "Late Neolithic Period: in northwestern Greece the Proto-Greek language had already been formed: this is the original home of the Greeks."
24. Coleman 2000, pp. 101–153.
25. Feuer, Bryan (2 March 2004). Mycenaean Civilization: An Annotated Bibliography through 2002, rev. ed. McFarland. p. 67. ISBN 978-0-7864-1748-3. Archived from the original on 26 March 2023. Retrieved 28 September 2020. Supports an interpretation of Marija Gimbutas' Kurgan theory involving the migration of a proto-Greek population which arrived in Greece during the Early Helladic period.
26. Katicic, Radoslav (2012) [1976]. Winter, Werner (ed.). Ancient Languages of the Balkans (Part 1). Trends in Linguistics: State-of-the-art Reports. Vol. 4. De Gruyter Mouton. pp. 122–123. ISBN 978-3-11-156887-4.
27. Mallory, J.P. (2003). "The Homeland of the Indo-Europeans". In Blench, Roger; Spriggs, Matthew (eds.). Archaeology and Language I: Theoretical and Methodological Orientations. Routledge. p. 101. ISBN 1-134-82877-2. Archived from the original on 2023-03-26. Retrieved 2020-08-20.
28. Anthony 2010, p. 81.
29. van Beek 2022b, pp. 189–190: "In sum, the most likely scenario is as follows (see the tentative tree in Figure 11.1). In the first centuries of the second millennium, Proto-Greek was undifferentiated, although there was no doubt some variation, as well as affinities with other Balkan languages.³⁷ Around 1700, South Greek-speaking tribes penetrated into Boeotia, Attica, and the Peloponnese, while North Greek was spoken roughly in Thessaly, parts of Central Greece, and further North and West (up to Epirus, and perhaps also Macedonia). During the early Mycenaean period, South Greek diverged by the assibilation of *ti, the simplification of word-internal *ts and *ss, and a number of morphological innovations. ³⁷ Scholars often date the immigration into the Peloponnese to the end of the third millennium, but I would prefer a later date coinciding with the beginning of Late Helladic, in the seventeenth century BCE (cf. Hajnal 2005). This would fit the linguistic data best, as reconstructible differences between South Greek and North Greek in the late Mycenaean period are relatively small."
30. Filos 2014, pp. 177–179.
31. Benjamin W. Fortson IV (2004). Indo-European Language and Culture. Blackwell Publishing Ltd. p. 227.
32. Filos 2014, p. 178.
33. Sihler 1995, p. 190.
34. Sihler 1995, p. 191.
35. Sihler 1995, p. 189–196.
36. Sihler 1995, p. 192.
37. Sihler 1995, p. 205.
38. Sihler 1995, p. 190–191.
39. Woodard 1997, p. 95.
40. Sihler 1995, p. 190.
41. Sihler 1995, pp. 190, 205.
42. Skelton 2014, p. 34.
43. Skelton 2014, pp. 35, 39.
44. Skelton 2014, p. 35.
45. Egetmeyer 2010, p. 123.
46. Sihler 1995, p. 195.
47. Lengthened -ei /eː/ due to Attic analogical lengthening in comparatives.
48. Sihler 1995, p. 194.
49. Sihler 1995, pp. 191–192.
50. Sihler 1995, p. 194.
51. Teodorsson, Sven-Tage (1979). "On the Pronunciation of Ancient Greek Zeta". Lingua. 47 (4): 323–332. doi:10.1016/0024-3841(79)90078-0.
52. Sihler 1995, pp. 42–43.
53. Filos 2014, p. 180.
54. Sihler 1995.
55. Sihler 1995.
56. Filos 2014, pp. 180–181.
57. Benjamin W. Fortson IV (2004). Indo-European Language and Culture. Blackwell Publishing Ltd. p. 226.
58. Ramón, José Luis García (2017). "The morphology of Greek". In Klein, Joseph and Fritz (2017), Handbook of Comparative and Historical Indo-European Linguistics. Page 654.
59. Filos 2014, pp. 182–183.

References

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Further reading

• Beekes, Robert Stephen Paul (1995). Comparative Indo-European Linguistics. Amsterdam: John Benjamins. ISBN 90-272-2150-2.