The use of the term Southeast Asian languages in this article is based on linguistic considerations; however, the term is also employed by some scholars in a geographical sense to include three distinct language families of the region, namely, Malayo-Polynesian languages, Sino-Tibetan languages, and Mon-Khmer languages. A grouping together of the Malayo-Polynesian and Southeast Asian (or Austroasiatic) languages into a single Austric family has also been proposed on the basis of certain phonetic, lexical, and grammatical similarities, but this grouping has not yet been generally accepted.
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