The most common Korean word for “fault” is 잘못 (jalmot). 「fault」는 한국어로 잘못.
Learn 잘못 free — flashcards, audio and review →「잘못」 단어장으로 무료로 외우기Words and levels: TOPIK I essentials (National Institute of Korean Language standard curriculum, KOGL Type 1) · examples: Cheesepotato