Advance ㄱ very tough in Korean: 끈질기다’s meaning and pronunciation very tough in Korean is 끈질기다. For examples, you can use like [고기가 끈질기다, 나물이 끈질기다]. In this post you will learn how to pronounce and use very tough in Korean along with examples. 2022.12.21 Advance ㄱAdvanced WordsWordsㄱ