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Hyun-ju Kim. 2015. The Interaction of Prosody and Vowel Epenthesis in Loanword Adaptation: Phonology, Phonetics, and Learnability. Korean Journal of Linguistics, 40-3, 333-359. This study investigates phonetic qualities of Korean epenthetic vowels to provide an account of accent-epenthesis interaction in Kyungsang Korean (KK) loanwords. Accentuation of KK loanwords is generally predictable in words consisting of only light syllables, following a default accent pattern where the penultimate syllable is accented (Kim 1997; Kenstowicz and Sohn 2001). However, epenthetic vowels tend to resist accent in KK loanwords (Kenstowicz and Sohn 2001; Broselow 2008; Rhee and Kim 2003). The results showed that epenthetic vowels were identical phonetically to lexical vowels. This finding suggests that the different behavior of epenthetic vowels and lexical vowels cannot be attributed to acoustic differences between lexical and inserted vowels. Therefore, if information concerning the status of epenthetic vowels is not available in the acoustic signal, a learnability question such as how KK speakers learn the relationship between accentability and lexical status is raised. It is suggested that other informative cues such as probabilistic information of distinct phonotactic distribution in loanwords help learners to access the nonlexical status of epenthetic vowels. (The State University of New York, Korea)