Discourse markers are important to help interact in spoken discourse. Especially since Korean is a context-dependent language, it is very important to use them in appropriate situations. This study aims to suggest that the adverb ‘yakgan’ discussed as one of the degree adverb until now has expanded its meaning in the actual spoken discourse and plays a role of a discourse marker. To discuss this, this study used spoken corpus composed of the Sejong and semi-subcorpus composed of twitter comments and Kakao Talk. Then to compare the learner’s using of ‘yakgan’ patterns through the spoken corpus of ‘Korean learner corpus (KLC)’. Through this, this study intends to search for a way to contribute to the smooth communication of learners by illuminating the ‘약간(yakgan)’ as a discourse marker which is known only as degree adverbs so far.(Yonsei University)