The purpose of this paper is to introduce and investigate the new dialect words that are used in a regional dialect in Korea. Seventeen dialect words are introduced in this paper. This seventeen dialect words are all the important linguistic material from the lexical point of view. This dialect materials were recorded from native speaker`s dialogue, dictation. This twenty dialect words include five new words in Chungcheong-do dialect, six new words in Hamkyeong-do dialect, four new words in Jeolla-do dialect and five new words in Cheju-do dialect. Chungcheong-do dialect words were written by Park Kyeongrae(Semyung University), Hamkyeong-do dialect words were written by Kwak Chunggu(Sogang University), Jeolla-do dialect words were written by Lee kigap(Mokpho University) and Cheju-do dialect words were written by Kang Youngbong(Cheju University). We set out the standard word corresponds to dialect, a part of speech, a definition of the dialect word, a diversity forms of the each dialect word, related area, illustrative sentences and explanation to each dialect word. We can find through this work that the new dialect words makes significant contribution to study of the dialect. And the new dialect words enrich our vocabulary.