점진적 음변화로서의 ㅅ>ㅿ - 방언 반사형에 대한 해석을 중심으로 -

Abstract

This paper aims to demonstrate that the intervocalic 's>z' is a lexically gradual sound change and the /s/-preserving dialectal forms are the residual forms of the change. In this paper, I approached the 's>z' change from the perspective of a gradual lexical diffusion. I showed the 's>z' change has diffused in the lexically gradual way over a long time span drawing on the investigation of various dialectal forms related to /z/(=ㅿ) of Middle Korean. I especially considered the ø-forms and /ʧ/-forms of Contemporary Korean dialects which were originally /s/-forms in Middle Korean as the important evidence of the 's>z' change, since they are the results of gradual sound changes such as 's>z>ø' and 's>z>ʧ'. Furthermore, I approached the question why 's>z' change ceased from the phonetic viewpoint. I suggested the gradual increasing of the degree of aspiration of /s/ caused the decreasing of the possibility of intervocalic voicing of /s/.