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