갑자기
gapjagi · TOPIK 1
suddenly
⚡ Sounds like gap-jog-y: a GAP in the calm, then a JOG starts with no warning
갑자기 (gapjagi) means suddenly. Hear it as gap + jaggy: a gap opens with no warning and the smooth moment turns jagged. Often shortened in speech to 갑분 in slang like 갑분싸 (the mood suddenly went cold).