This study presents a description of the synchronic phonology of seven Atayal dialects, a reconstruction of Proto-Atayal phonology and lexicon, a reconstruction of some 1100 lexical items in Proto-Atayal in the appendix, and a subgrouping of the seven Atayal dialects. The seven dialects are: Squliq, Skikun, Matu’uwal, Plngawan, Klesan, S’uli, and Matu’aw. The Squliq and Matu’uwal dialects have received considerable attention in linguistic literature. The rest have had little to no research done on them, especially with regard to phonology. Data used in the dissertation is primarily from my own fieldwork, which includes approximately 2000 words on average from each dialect.
The phonological descriptions include phoneme inventories, phonotactics, as well as synchronic alternation processes. The consonant systems are largely similar across dialects, containing from 16 to 18 consonant phonemes. The main differences are: (1) the lack of a /q/ phoneme in Plngawan, Klesan, S’uli, and Matu’aw; (2) the lack of a /t͡s/ phoneme in Squliq, S’uli, and Matu’aw (although Squliq is developing a phonemic contrast between /t͡s/ and /s/ in some environments); and (3) the presence of a second rhotic /ɹ/ in Plngawan. The vowel systems in Atayal dialects range from 3 vowels in Matu’aw to 6 vowels in Squliq, Skikun, S’uli, and Klesan (including the marginal phoneme /ə/). Three dialects—Matu’uwal, Plngawan, and Matu’aw—preserve phonemic vowel distinctions in the third-to-last syllable, while the remaining dialects neutralize them. Phonotactically, Matu’uwal is the only dialect to preserve word-final voiced fricatives. In terms of syllable structure, all dialects except Matu’uwal allow CGVC syllables, and some allow even more complexity, with CGVGC syllables attested in Matu’aw.
The phonology of Proto-Atayal is reconstructed based on regular and recurrent sound correspondences between the dialects, in accordance with the standard Comparative Method. Proto-Atayal had a slightly larger consonant inventory than extant dialects, with a total of 19 consonant phonemes: it has the phonemes *q, *c, and *ɹ, but no modern dialect has preserved all three. In contrast to more complexity in its consonants, Proto-Atayal a simple four-vowel system, smaller than most modern Atayal dialects. Apart from the phoneme inventory, I reconstruct the phonotactics of Proto-Atayal: its syllable structure and phoneme distribution restrictions. Proto-Atayal had a relatively simple syllable structure, with the maximum syllable being CVC, and only semivowel codas allowed word-medially.
I divide the Atayal dialects into two main groups—Northern Atayal and Southern Atayal. The Northern subgroup comprises Matu’uwal, Squliq, and Skikun, and is evidenced by the common merger of Proto-Atayal word-final *-lit and *-liʔ sequences, as well as a number of lexical innovations. Within the Northern subgroup, Squliq and Skikun form the Nuclear Northern Atayal subgroup, as evidenced by no less than five common sound changes and a number of lexical innovations and shared aberrations. The Southern group consists of Plngawan, Klesan, S’uli, and Matu’aw, which share the merger of Proto-Atayal *q and *ʔ, and a number of lexical innovations. Within the Southern subgroup, Klesan, S’uli, and Matu’aw form the Nuclear Southern Atayal subgroup, sharing the merger of Proto-Atayal *ɹ and *y on the phonological side. S’uli and Matu’aw are even more closely related, forming the Southwestern Atayal subgroup, evidenced by lexical innovations and aberrations, and the merger of *c and *s. This new subgrouping is more accurate and more detailed than the previous proposal of a bidialectal divide into Squliq and C’uli’ (Utsurikawa et al. 1935).