Proto-Austroasiatic language

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The Proto-Austroasiatic language is the reconstructed ancestor of the Austroasiatic languages.

Proto-Mon–Khmer (i.e., all Austroasiatic branches except for Munda) has been reconstructed in Harry L. Shorto's Mon–Khmer Comparative Dictionary, while a new Proto-Austroasiatic reconstruction is currently being undertaken by Paul Sidwell. Paul Sidwell (2009)[1] suggests that the likely homeland of Austroasiatic is in the Mekong River region, and that the family is not as old as frequently assumed, dating to perhaps 2,000 BCE.[2]

Peiros (2011) criticized Sidwell's theory heavily and calls it a bunch of contradictions. He show with his analysis that the homeland of Austroasiatic is somewhere near the Yangtze. He suggests the Sichuan Basin as likely homeland of proto-Austroasiatic before they migrated to other parts of central and southern China and than into Southeast Asia. He further suggests that the family must be as old as proto-Austronesian and proto-Sino-Tibetan or even older.[3]

A genetic and linguistic research in 2015 about ancient people in East Asia suggest an origin and homeland of Austroasiatic in today southern China or even further north.[4]


Shorto (2006)[edit]

The Proto-Mon–Khmer language is the reconstructed ancestor of the Mon–Khmer languages, a purported primary branch of the Austroasiatic language family. However, Mon–Khmer as a taxon has been abandoned in recent classifications, making Proto-Mon–Khmer synonymous with Proto-Austroasiatic;[1] the Munda languages, which are not well documented, and have been restructured through external language contact, have not been included in the reconstructions.

Proto-Mon–Khmer as reconstructed by Harry L. Shorto (2006) has a total of 21 consonants, 7 distinct vowels, which can be lengthened and glottalized, and 3 diphthongs.

Proto-Mon–Khmer consonants
Labial Alveolar Palatal Velar Glottal
Unvoiced stop p /p/ t /t/ c /c/ k /k/ ʔ /ʔ/
Voiced stop b /b/ d /d/ j /ɟ/ g /g/
Implosive stop ɓ ɗ
Nasal m /m/ n /n/ ɲ /ɲ/ ŋ /ŋ/
Semivowel w /w/ y /j/
Liquid r /r/, l /l/
Fricative s /ç/ h /h/

Proto-Mon–Khmer is rich in vowels. The vowels are:

  • *a, *aa
  • *e, *ee
  • *ə, *əə
  • *i, *-iʔ, *ii, *-iiʔ
  • *o, *oo
  • *ɔ, *ɔɔ
  • *u, *uu, *-uuʔ
Proto-Mon–Khmer vowels
Height Front Central Back
Close i /i/, ii /iː/ u /u/, uu /uː/
Mid e /e/, ee /eː/ ə /ə/, əə /əː/ o /o/, oo /oː/
Open a /a/, aa /aː/ ɔ /ɔ/, ɔɔ /ɔː/

The diphthongs are:

  • *iə, *uə, *ai

Sidwell & Rau (2015)[edit]

Paul Sidwell and Felix Rau (2015)[5][6] propose the following syllable structure for Proto-Austroasiatic.

  • *Cᵢ(Cm)VCf

Also possible are more complex forms with prefixes and infixes, as well as presyllable “coda-copying” from main syllables.

  • *(Cp(n/r/l))CᵢVCf

Sidwell & Rau (2015)[5] reconstruct 21-22 Proto-Austroasiatic consonants (the reconstruction of *ʄ is uncertain).

All of the Proto-Austroasiatic consonants except for implosives and voiced stops can occur as syllable finals (Cf).

All of the Proto-Austroasiatic unvoiced stops and voiced stops, as well as *m-, *N-, *r-, *l-, and *s-, can occur as presyllables or sesquisyllables (Cp).

Medial consonants (Cm) are *-w -, *-r -, *-l -, *-j -, and *-h-.

Proto-Austroasiatic consonants
Labial Alveolar Palatal Velar Glottal
Unvoiced Stop p t c k ʔ
Voiced Stop b d ɟ ɡ
Implosive ɓ ɗ (ʄ)
Nasal m n ɲ ŋ
Unvoiced Fricative s h
Approximant w l j
Rhotic r

Sidwell & Rau (2015)[5] reconstructs 8 Proto-Austroasiatic vowels, for which there is vowel length contrast. A long vowel will be appended with triangular colon (ː) instead of doubling.

Proto-Austroasiatic vowels
Height Front Central Back
Close i u
Mid e ə o
Open ɛ a ɔ

Proto-Austroasiatic diphthongs are *iə and *uə, and possibly *ie and *uo.[7]


Common structures include *CV(C) and *CCV(C) roots. *CVC roots can also be affixed either via prefixes or infixes, as in *C-CVC or *C⟨C⟩VC (Shorto 2006). Sidwell (2008) gives the following phonological shapes for two types of stems.

  • Monosyllabic - C(R)V(V)C
  • Sesquisyllabic - CCV(V)C

Note: R is one of the optional medial consonants /r, l, j, w, h/.

Sidwell (2008) considers the two most morphologically conservative Mon–Khmer branches to be Khmuic and Aslian. On the other hand, Vietnamese morphology is far more similar to that of Chinese and the Tai languages and has lost many morphological features found in Proto-Mon–Khmer.

The following Proto-Mon–Khmer affixes, which are still tentative, have been reconstructed by Paul Sidwell (Sidwell 2008:257-263).

  • Nominalizing *-n- (instrumental in Kammu, resultative in Khmu)
  • Nominalizing agentive *-m-
  • Nominalizing iterative (expressive of repetitiveness/numerousness) *-l-/*-r-
  • Nominalizing instrumental *-p-
  • Causative *p(V)- (allomorphs: p-, pn-, -m-)
  • Reciprocal *tr-/*t(N)-
  • Stative *h-/*hN- (?)

Roger Blench (2012)[8] notes that Austroasiatic and Sino-Tibetan share many similarities regarding word structure, particularly nominal affixes (otherwise known as sesquisyllables or minor syllable prefixes). Blench (2012) does not make any definitive conclusions about how these similarities could have arisen, but suggests that this typological diffusion might have come about as a result of intensive contact in an area between northern Vietnam, Laos, and northeast Myanmar.


Like the Tai languages, Proto-Mon–Khmer has an SVO, or verb-medial, order. Proto-Mon–Khmer also makes use of noun classifiers and serial verb constructions (Shorto 2006).

However, Paul Sidwell (2018)[6] suggests that Proto-Austroasiatic may have in fact been verb-initial, with SVO order occurring in Indochina due to convergence in the Mainland Southeast Asia linguistic area. Various modern-day Austroasiatic languages display verb-initial word order, including Pnar and Wa (Jenny 2015).[9] Nicobarese also displays verb-initial word order.[6]



Proto-Austroasiatic personal pronouns as follows, with reconstructions from Sidwell & Rau (2015).

Pronoun English gloss Proto-Austroasiatic
1s. 'I' *ʔaɲ
2s. 'you (sg.)' *miːʔ
3s. 'third person' *gi(ː)ʔ
1p. (incl.) 'we (incl.)' *ʔiːʔ
1p. (excl.) 'we (excl.)' *ʔjeːʔ

Reconstructed vocabulary[edit]

The following Proto-Austroasiatic lexical proto-forms have been reconstructed by Sidwell & Rau (2015:340-363), and correspond to the 100-item Swadesh list.[5]

  • *klɔʔ ‘all’
  • *tum ‘all’
  • *bɔh, *buːh ‘ashes’
  • *-pɔːk ‘bark’
  • *buŋ ‘belly’
  • *kluŋ ‘middle’
  • *wiəŋ ‘belly’
  • *ciːm, *ceːm ‘bird’
  • *kap ‘to bite’
  • *kat ‘to bite’
  • *saːm ‘to bleed’
  • *ɟhaːm, *(b/m)haːm ‘to bleed’
  • *cʔaːŋ ‘bone’
  • *toːh ‘breast’
  • *coːh ‘to ignite’
  • *tɔːt, *tuːt ‘to ignite’
  • *guːc ‘to burn’
  • *-rsiːm ‘finger-nail’
  • *rməl ‘cloud’
  • *ʔuːt ‘cloud(y)’
  • *tkat ‘cold’
  • *ŋi(ə)t ‘cold’
  • *truh ‘to arrive’
  • *kceːt ‘to die’
  • *cɔːʔ ‘dog’
  • *ʔuək ‘to drink’
  • *hoːc ‘to suck, drink’
  • *raɲ ‘dry’
  • *-toːr ‘ear’
  • *tiʔ ‘earth’
  • *caːʔ ‘to eat’
  • *p(n)ləːŋ ‘egg’
  • *-tap ‘egg’
  • *ktam ‘egg’
  • *mat ‘eye’
  • *pri(ə)ŋ ‘fat, oil’
  • *klaɲ ‘fat, oil’
  • *ʔuːs, *ʔɔːs ‘fire’
  • *kaʔ ‘fish’
  • *par ‘to fly’
  • *həːr ‘to fly’
  • *ɟəːŋ ‘foot, leg’
  • *biːŋ; *beːɲ ‘full’
  • *ʔam ‘to give’
  • *ʔa(ː)n ‘to give’
  • *ʔVːj ‘to give’
  • *ləʔ, *lʔɔʔ ‘good’
  • *kciʔ ‘young, green’
  • *-ŋaːr ‘green’
  • *suk, *sɔːk ‘hair’
  • *tiːʔ ‘hand, arm’
  • *ktəŋ ‘to hear’
  • *rməŋ ‘to hear’
  • *saŋ ‘to hear’
  • *(p)nɔːs ‘heart’
  • *draŋ ‘horn’
  • *krəŋ ‘horn’
  • *ʔaɲ ‘I’
  • *krceːt ‘to die’
  • *-kuːl ‘knee’
  • *naŋ ‘to know’
  • *slaʔ ‘leaf’
  • *kləːm ‘liver’
  • *ris ‘liver’
  • *ɟroŋ, *ɟrɔŋ ‘high, long’
  • *ɟləːŋ, *ɟliːŋ ‘long’
  • *ciːʔ ‘louse’
  • *gləŋ ‘much, many’
  • *sac ‘flesh’
  • *khaj ‘moon’
  • *bruːʔ ‘hill, mountain’
  • *bnəm ‘hill’
  • *du(ə)l ‘hill’
  • *-mɔl ‘mountain’
  • *paːŋ ‘mouth, opening’
  • *mɔːɲ ‘mouth’
  • *smuər ‘nose, beak’
  • *-məh ‘name’
  • *kɔʔ ‘neck’
  • *-kɔːŋ ‘nape’
  • *-lɔːŋ ‘throat’
  • *tmiːʔ ‘new’
  • *cəːm ‘night’
  • *-tam ‘night’
  • *mɔːh, *muːh, *muːs ‘nose’
  • *ʔət ‘used up, lacking’
  • *ʔam ‘not’
  • *diʔ ‘one’
  • *muəj, *moːj ‘one’
  • *ʔiːʔ ‘person’
  • *mraʔ ‘person’
  • *gmaʔ ‘rain’
  • *briːʔ ‘sky, rain’
  • *-saw ‘red’
  • *kraʔ ‘road, way’
  • *ɗeːŋ, *ɗiəŋ ‘road, way’
  • *truːŋ,*trɔːŋ ‘road, way’
  • *glɔːŋ ‘road, way’
  • *riəs ‘root’
  • *wi(ə)l ‘round’
  • *ksa(ː)c ‘sand’
  • *jɔl ‘to see’
  • *ŋgu(ː)j ‘to sit down’
  • *-kuːʔ ‘to sit, stay’
  • *huːr ‘skin’
  • *tiək ‘to lie down, sleep’
  • *ɓic ‘to lie down, sleep’
  • *dit, *kɗi(ə)t ‘small’
  • *ptoʔ ‘smoke (n.)’
  • *ŋaːj ‘to speak’
  • *dək ‘to stand up’
  • *ɟə(ː)ŋ, *ɟuːŋ ‘to stand’
  • *taːw ‘to stand’
  • *s(ʔ)maɲ ‘star’
  • *tmɔʔ ‘stone’
  • *tŋiːʔ ‘sun, day’
  • *loːj ‘to swim, wade’
  • *sntaʔ ‘tail’
  • *-dɔːŋ ‘stalk, tail’
  • *tiːʔ ‘that (dist.)’
  • *tɔʔ ‘that (med.)’
  • *gi(ː)ʔ ‘3rd person’
  • *niʔ; *neʔ ‘this (prox.)’
  • *nɔ(ː)ʔ ‘this; here’
  • *miːʔ ‘you (sing.)’
  • *lntaːk ‘tongue’
  • *lmVɲ ‘tooth’
  • *sraŋ ‘tooth’
  • *p(i)əŋ ‘tooth’
  • *ɟhuːʔ, *ɟhiːʔ ‘tree, wood’
  • *tnəːm ‘trunk, stem, tree’
  • *ɓaːr ‘two’
  • *toʔ ‘hot’
  • *taɲ ‘hot’
  • *(s)ʔ(a/ə)m ‘warm’
  • *ɗaːk ‘water’
  • *ʔiːʔ ‘we (incl.)’
  • *ʔjeːʔ ‘we (excl.)’ (*ʄeːʔ ?)
  • *məh ‘what’
  • *ɓɔːk ‘white’
  • *-lɔːk ‘white’
  • *mVh ‘who’
  • *kan ‘woman, female’
  • *k(-)duər ‘wife’
  • *-ŋaːr ‘yellow’

Branch reconstructions[edit]

Austroasiatic branch-level reconstructions include:

Origin and dispersal[edit]

Paul Sidwell (2018)[22] considers the Austroasiatic language family to have rapidly diversified around 4,000 years B.P. during the arrival of rice agriculture in Indochina, but notes that the origin of Proto-Austroasiatic itself is older than that date. The lexicon of Proto-Austroasiatic can be divided into an early and late stratum. The early stratum consists of basic lexicon including body parts, animal names, natural features, and pronouns, while the names of cultural items (agriculture terms and words for cultural artifacts, which are reconstructable in Proto-Austroasiatic) form part of the later stratum.

Integrating computational phylogenetic linguistics with recent archaeological findings, Paul Sidwell (2015)[7] further expanded his Mekong riverine hypothesis by proposing that Austroasiatic had ultimately expanded into Indochina from the Lingnan area of southern China, with the subsequent Mekong riverine dispersal taking place after the initial arrival of Neolithic farmers from southern China. Sidwell (2015) tentatively suggests that Austroasiatic may have begun to split up 5,000 years B.P. during the Neolithic transition era of mainland Southeast Asia, with all the major branches of Austroasiatic formed by 4,000 B.P. Austroasiatic would have had two possible dispersal routes from the western periphery of the Pearl River watershed of Lingnan, which would have been either a coastal route down the coast of Vietnam, or downstream through the Mekong River via Yunnan.[7] Both the reconstructed lexicon of Proto-Austroasiatic and the archaeological record clearly show that early Austroasiatic speakers around 4,000 B.P. cultivated rice and millet, kept livestock such dogs, pigs, and chickens, and thrived mostly in estuarine rather than coastal environments.[7] At 4,500 B.P., this "Neolithic package" suddenly arrived in Indochina from the Lingnan area without cereal grains and displaced the earlier pre-Neolithic hunter-gatherer cultures, with grain husks found in northern Indochina by 4,100 B.P. and in southern Indochina by 3,800 B.P.[7] However, Sidwell (2015) found that iron is not reconstructable in Proto-Austroasiatic, since each Austroasiatic branch has different terms for iron that had been borrowed relatively lately from Tai, Chinese, Tibetan, Malay, and other languages. During the Iron Age about 2,500 B.P., relatively young Austroasiatic branches in Indochina such as Vietic, Katuic, Pearic, and Khmer were formed, while the more internally diverse Bahnaric branch (dating to about 3,000 B.P.) underwent more extensive internal diversification.[7] By the Iron Age, all of the Austroasiatic branches were more or less in their present-day locations, with most of the diversification within Austroasiatic taking place during the Iron Age.[7]

Roger Blench (2018)[23][24] suggests that vocabulary related to aquatic subsistence strategies (such as boats, waterways, river fauna, and fish capture techniques), can be reconstructed for Proto-Austroasiatic. Blench (2018) finds widespread Austroasiatic roots for 'river, valley', 'boat', 'fish', 'catfish sp.', 'eel', 'prawn', 'shrimp' (Central Austroasiatic), 'crab', 'tortoise', 'turtle', 'otter', 'crocodile', 'heron, fishing bird', and 'fish trap'. Archaeological evidence for the presence of agriculture in northern Indochina (northern Vietnam, Laos, and other nearby areas) dates back to only about 4,000 years B.P. (2,000 B.C.), with agriculture ultimately being introduced from further up to the north in the Yangtze valley where it has been dated to 6,000 B.P.[23] Hence, this points to a relatively late riverine dispersal of Austroasiatic as compared to Sino-Tibetan, whose speakers had a distinct non-riverine culture. In addition to living an aquatic-based lifestyle, early Austroasiatic speakers would have also had access to livestock, crops, and newer types of watercraft. As early Austroasiatic speakers dispersed rapidly via waterways, they would have encountered speakers of older language families who were already settled in the area, such as Sino-Tibetan.[23]


  1. ^ a b Sidwell, Paul (2009). The Austroasiatic Central Riverine Hypothesis. Keynote address, SEALS, XIX.
  2. ^ Family Diversity and the Austroasiatic Homeland, Paul Sidwell (abstract)
  3. ^ "Some thoughts on the problem of the Austro-Asiatic homeland" (PDF). Peiros (2011).
  4. ^ Zhang, Xiaoming; Liao, Shiyu; Qi, Xuebin; Liu, Jiewei; Kampuansai, Jatupol; Zhang, Hui; Yang, Zhaohui; Serey, Bun; Tuot, Sovannary (2015-10-20). Y-chromosome diversity suggests southern origin and Paleolithic backwave migration of Austro- Asiatic speakers from eastern Asia to the Indian subcontinent OPEN. 5.
  5. ^ a b c d Sidwell, Paul and Felix Rau (2015). "Austroasiatic Comparative-Historical Reconstruction: An Overview." In Jenny, Mathias and Paul Sidwell, eds (2015). The Handbook of Austroasiatic Languages. Leiden: Brill.
  6. ^ a b c Sidwell, Paul. 2018. Austroasiatic Studies: state of the art in 2018. Presentation at the Graduate Institute of Linguistics, National Tsing Hua University, Taiwan, May 22, 2018.
  7. ^ a b c d e f g Sidwell, Paul. 2015. Phylogeny, innovations, and correlations in the prehistory of Austroasiatic. Paper presented at the workshop Integrating inferences about our past: new findings and current issues in the peopling of the Pacific and South East Asia, June 22nd – June 23rd, 2015, Max Planck Institute for the Science of Human History, Jena, Germany.
  8. ^ Blench, Roger. 2012. The origins of nominal affixes in Austroasiatic and Sino-Tibetan: convergence, contact and some African parallels. Paper presented at the Mainland Southeast Asian Languages: The State of the Art in 2012 workshop, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany, 29 November - 1 December 2012. (slides)
  9. ^ Jenny, Mathias. 2015. Syntactic diversity and change in Austroasiatic languages. In Viti, Carlotta (ed.). Perspectives on historical syntax. Amsterdam: John Benjamins, 317–340.
  10. ^ Sidwell, Paul. 2012. Proto Khasic. Mon-Khmer Etymological Database.
  11. ^ Sidwell, Paul. 2010. Preliminary Notes on Proto Palaungic. Mon-Khmer Etymological Database.
  12. ^ Sidwell, Paul. 2013. Proto Khmuic. Mon-Khmer Etymological Database.
  13. ^ Hsiu, Andrew. 2016. A preliminary reconstruction of Proto-Pakanic. doi:10.5281/zenodo.1127812
  14. ^ Ferlus, Michel. 2007. Lexique de racines Proto Viet-Muong. Unpublished manuscript.
  15. ^ Sidwell, Paul. 2005. The Katuic Languages: classification, reconstruction and comparative lexicon. Munich: Lincom Europa.
  16. ^ Sidwell, Paul. 2011. Proto Bahnaric. Mon-Khmer Etymological Database.
  17. ^ Ferlus, Michel. 1992. Essai de phonétique historique du khmer (Du milieu du premier millénaire de notre ère à l’époque actuelle). Mon-Khmer Studies 21: 57–89.
  18. ^ Headley, Robert K. 1985. "Proto-Pearic and the classification of Pearic." In Suriya Ratanakult et al (eds.), Southeast Asian Linguistic Studies Presented to Andre-G. Haudricourt. Institute of Language and Culture for Rural Development, Mahidol University. pp. 428-478.
  19. ^ Diffloth, Gérard. 1984. The Dvaravati-Old Mon Language and Nyah Kur (Monic Language Studies 1). Bangkok: Chulalongkorn University Printing House.
  20. ^ Phillips, Timothy C. 2012. Proto-Aslian: towards an understanding of its historical linguistic systems, principles and processes. Ph.D. thesis, Institut Alam Dan Tamadun Melayu Universiti Kebangsaan Malaysia, Bangi.
  21. ^ Sidwell, Paul. 2018. Proto-Nicobarese phonology. In Papers from the Seventh International Conference on Austroasiatic Linguistics, 101-131. Journal of the Southeast Asian Linguistics Society Special Publication No. 3. University of Hawai’i Press.
  22. ^ Sidwell, Paul. 2018. Austroasiatic deep chronology and the problem of cultural lexicon. Paper presented at the 28th Annual Meeting of the Southeast Asian Linguistics Society, held May 17-19, 2018 in Kaohsiung, Taiwan.
  23. ^ a b c Blench, Roger. 2018. Waterworld: lexical evidence for aquatic subsistence strategies in Austroasiatic. In Papers from the Seventh International Conference on Austroasiatic Linguistics, 174-193. Journal of the Southeast Asian Linguistics Society Special Publication No. 3. University of Hawai’i Press.
  24. ^ Blench, Roger. 2017. Waterworld: lexical evidence for aquatic subsistence strategies in Austroasiatic. Presented at ICAAL 7, Kiel, Germany.
  • Shorto, Harry L. Sidwell, Paul, Doug Cooper and Christian Bauer, eds. 2006. A Mon–Khmer Comparative Dictionary. Canberra: Australian National University. Pacific Linguistics. ISBN 0-85883-570-3.
  • Sidwell, Paul. 2008. "Issues in the morphological reconstruction of Proto-Mon–Khmer." In Bowern, Claire, et al. (eds). Morphology and language history: in honour of Harold Koch. Philadelphia: John Benjamins.
  • Mon– Lectures by Paul Sidwell

External links[edit]