Jeon, Eun-jin. 2012. A linguistic analysis of Slang, which is registered in ‘Youth Slang Dictionary’ in Smart-Phone Application. The Sociolinguistic Journal of Korea 20(1). pp. 267-293. This study analyzed slangs, which are registered in 'Youth Slang Dictionary' in smart-phone application, thereby having aimed to grasp the actual condition of slangs, which are now being used actively. This application is translating through registering slangs, which are used by adolescents, as if Korean dictionary, and is routinely updating, thereby being effective for grasping the actual condition of slangs, which are being lively used in the present age. As a result of analyzing Youth Slang Dictionary, the structural characteristic was indicated most noticeably, which expresses it with the first syllable by clipping a form in a word or word-phrase, given seeing in light of the expression. And sound transcription, Romanizaton, deletion, contraction, alternation, and addition were being indicated. Also, even the phenomenon, which newly expresses by producing new meaning, not the standard meaning of a word, was shown. Examining semantic characteristics, the slangs, which indicate figure, behavior, state, and psychology, were being used much. Each of slangs was strongly indicated the tendency of being used negatively, rather than being used positively.