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The Vietic languages are a branch of the Austroasiatic language family. The branch was once referred to by the terms ''Việt–Mường'', ''Annamese–Muong'', and ''Vietnamuong''; the term ''Vietic'' was proposed by Hayes (1992),〔Hayes, La Vaughn H. 1992. Vietic and Việt-Mường: a new subgrouping in Mon-Khmer. Mon-Khmer Studies 21. 211–228.〕 who proposed to redefine ''Việt–Mường'' as referring to a sub-branch of Vietic containing only Vietnamese and Mường. Many of the Vietic languages have tonal or phonational systems intermediate between that of Viet–Muong and other branches of Austroasiatic that have not had significant Chinese or Tai influence. Vietnamese, today, has had significant Chinese influence especially in vocabulary and tonal system. Sino-Vietnamese vocabulary accounts for about 30–60% of Vietnamese vocabulary, not including calques from China. Vietnamese was linguistically influenced primarily by Chinese. ==Origins== Based on linguistic diversity, the most probable homeland of the Vietic languages appears to have been located in modern-day Bolikhamsai Province and Khammouane Province in Laos as well as parts of Nghệ An Province and Quảng Bình Province in Vietnam. The time depth of the Vietic branch dates back at least 2,000 years.〔Chamberlain, J.R. 1998, "(The origin of Sek: implications for Tai and Vietnamese history )", in The International Conference on Tai Studies, ed. S. Burusphat, Bangkok, Thailand, pp. 97-128. Institute of Language and Culture for Rural Development, Mahidol University.〕 Vietnamese was identified as an Austroasiatic language in the mid-nineteenth century, and there is now strong evidence for this classification. Today, Vietnamese is a monosyllabic tonal language like Cantonese and has lost many Proto-Austroasiatic phonological and morphological features. Vietnamese has also large stocks of borrowed Chinese and Tai vocabulary. However, there continues to be resistance to the idea that Vietnamese could be more closely related to Khmer than to Chinese or the Tai languages. Nevertheless, the vast majority of scholars consider these typological similarities to be due to language contact rather than common inheritance. The ancestor of the Vietnamese language is traditionally assumed to have been originally based around the Red River area in what is now northern Vietnam. However, Chamberlain argues that the Red River Delta region was originally Tai-speaking and became Vietnamese-speaking only between the seventh and ninth centuries AD, as a result of immigration from the south, i. e., modern Central Vietnam, where the highly distinctive and conservative North-Central Vietnamese dialects are spoken today. Therefore, the region of origin of Vietnamese (and the earlier Viet–Muong) was well south of the Red River.〔 Like the ethnonym Lao, the name Yue/Việt originally referred to Tai–Kadai-speaking groups. In northern Vietnam, these later adopted Viet–Muong〔 and further north Chinese, where the designation Yue Chinese preserves the ethnonym. (Both in Vietnam and southern China, however, many Tai–Kadai languages remain in use.) This explains the fact that the same ethnonym Yue ~ Việt (whence Vietic) is associated with groups that speak Tai–Kadai, Austroasiatic and Chinese languages, which are typologically similar and share significant amounts of lexicon, but have different origins. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Vietic languages」の詳細全文を読む スポンサード リンク
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