금단 현상이 · 금단 현상을
withdrawal symptoms
Example
담배를 끊은 후 심한 금단 현상을 겪었어요.
After quitting smoking, I went through severe withdrawal symptoms.
Word parts
금 forbid+단 cut off+현 appear+상 image
Literally 'phenomenon of cutting off what's forbidden'.
Good to know
Used jokingly too: 스마트폰 금단 현상 means feeling lost without your phone.
Related words