PrenasalizedCahiers Reflex de OfLinguistique Old Tibetan Asie <ld-> Orientale 45 (2016) 127-147 127 East Asian Languages and Linguistics www.brill.com/clao Prenasalized reflex of Old Tibetan <ld-> and related clusters in Central Tibetan Xun Gong CRLAO, CNRS/EHESS/INALCO
[email protected] Keywords Lhasa Tibetan – Tibetan historical phonology – spontaneous nasalization – prelateralized stops – unnatural sound change 1 Introduction The stream of language change, though not without its eddies and vortices, nevertheless flows in a definite direction: loss. Phonetic material is shorn off and phonological categories merge with one another. To the result of blind loss, some degree of sanity might be brought back by ad hoc processes: com- pounding to avoid homophony (Gilliéron 1918), epenthesis to break up clus- ters, analogy to rationalize morphology. Amid this constant flow of loss and simplification, it is the other direction, material and distinctions appearing ex nihilo, that calls for careful documentation and causal explanation. Tibetan1 is an extreme example of phonological simplification. A syllable in Old Tibetan (OT) like <bsgrigs> ‘set up.PST’ is simplified in Lhasa Tibetan, the 1 Old/Written Tibetan, called Old Tibetan as the distinction is not of use for the purpose of this study, is transcribed according to Guillaume Jacques’s (2012) scheme. Notably, the letter <’> is transcribed as <ɦ> when used as a root letter, and <ⁿ> when preradical. Lhasa Tibetan forms, no matter the source, are (re)transcribed with the vowels of Seattle Tibetanists (cf. Chang & Shefts 1964, Goldstein 1984, Dawson 1980 and other publications of the same authors), i.e. with 12 vowels in six harmonic pairs: /a/ – /ə/, /ɛ/ – /ɪ/, /ɔ/ – /ʊ/, /e/ – /i/, /o/ – /u/, /ø/ – /y/ (in the notation of Chang and Shefts, later continued by Goldstein, a – ə, ɛ – ė, ɔ – ȯ, e – i, o – u, ö – ü).