Classification of Southeast Asian languages
There have been various classification schemes for Southeast Asian languages.
Language families
The five established major language families are:- Austroasiatic
- Austronesian
- Hmong–Mien
- Kra–Dai
- '''Sino-Tibetan'''
Isolates and small families
- Potential language isolates and independent language families in Arunachal: Digaro, Hrusish, Midzu, Puroik, Siangic, and Kho-Bwa
- The two Andamanese language families: Great Andamanese and Ongan
- Language isolates and languages with isolate substrata of Southeast Asia: Kenaboi, Enggano, and the Philippine Negrito languages Manide and Umiray Dumagat
Macrofamilies
- Austro-Tai links the Austronesian and Kra–Dai languages. Several linguists, including Laurent Sagart, Stanley Starosta, Weera Ostapirat and Lawrence Reid, accept or theorize a close relationship between these families, but the specifics of the relationship remain unclear. Multiple models of the internal branching of Austro-Tai have been put forward, and Austro-Tai has been incorporated as a subgroup within some larger macrofamily schemes, e.g. in Starosta's East Asian as well as in Sagart's model of Austronesian, both of which regard Kra–Dai as a subfamily within Austronesian. A few versions of Austro-Tai have included Japonic and/or the isolate Ainu as well, though these have not been met with as much acceptance.
- Miao–Dai is a hypothesis for a family including Miao–Yao and Kra–Dai.
- Sino-Austronesian links Austro-Tai with Sino-Tibetan.
- Austric links all of the major language families of Southeast Asia apart from Sino-Tibetan. Several variants of the Austric hypothesis have been proposed since it took shape with Paul K. Benedict's proposal. Some of these also incorporate Japonic, Korean and/or Ainu. One version called the "Greater Austric" hypothesis includes Ainu as well as Nihali, a language isolate of India.
- The "Proto-Asian hypothesis" or "Austro-Asian" argues for lexical evidence of relationship among all of the languages typically included in Austric as well as Japanese–Korean and Sino-Tibetan.
- East Asian covers all of these families as well as Sino-Tibetan. It posits Austronesian as the most divergent branch, coordinate with a primary branch Sino-Tibetan–Yangzian which links Sino-Tibetan with a clade called Yangzian, named for the Yangtze river, which includes Austroasiatic and Hmong–Mien.
- In a different direction, the Dené–Caucasian or Sino-Caucasian hypothesis links Sino-Tibetan to Yeniseian and North Caucasian, the proposal later expanded to include Na-Dene, Burushaski and Basque. On the basis of lexicostatistics, Sergei Starostin additionally hypothesized an even larger Dené–Daic macrofamily which incorporates both Dené–Caucasian and Austric as primary branches.
Proto-languages
- Proto-Austronesian
- *Proto-Malayo-Polynesian
- **Proto-Visayan language
- **Proto-Malayic language
- **Proto-Chamic language
- **Proto-Oceanic
- ***Proto-Polynesian
- Proto-Kra–Dai
- *Proto-Kra
- *Proto-Kam–Sui
- *Proto-Hlai
- *Proto-Tai
- Proto-Austroasiatic
- *Proto-Palaungic
- *Proto-Khmeric
- *Proto-Aslian
- *Proto-Munda
- Proto-Sino-Tibetan
- *Old Chinese language
- *Proto-Tibeto-Burman
- **Proto-Loloish
- **Proto-Karenic
- Proto-Hmong–Mien
- *Proto-Hmongic
- *Proto-Mienic
Comparison
| Proto-language | Proto-Kra | Proto-Tai | Proto-Hlai | Proto-S. Kra–Dai | Proto-Austronesian | Proto-Tibeto-Burman | Proto-Mon–Khmer |
| Source | Ostapirat | Pittayaporn | Norquest | Norquest | Blust | Matisoff | Shorto |
| Consonants | 32 | 33–36 | 32 | 28–29 | 25 | 23 | 21 |
| Vowels | 6 | 7 | 4–5 | 5–7 | 4 | 5–6 | 7 |
| Diphthongs | 4 | 5 | – | 1+ | 4 | 2+ | 3 |
| Consonantal finals | 7 | 10–11 | – | – | – | 6 | – |
| Vowel length contrast | No | Yes | Yes | Yes | No | Yes | Yes |