안 한

didn’t do

→ 안
phrase Uncommon #13,221
didn’t do Negates the verb 하다 (“to do”) in the past or describes something that was not done. In the last example, it means “not wearing” makeup.
KO: 숙제를 안 한 사람이 누구야?
EN: Who didn’t do the homework?

화장은 안 한 듯 자연스럽게 해야 해요

Your makeup should look natural, as if you aren't wearing any.

— 필사의 추적 (1981)

할 수 있는데 안 한 거 다 알았지?

You could’ve done it, but you didn’t, got it?

— Virgin Stripped Bare by Her Bachelors (2000)

그건 안 한 것만 못하는 거 야

That’s worse than not doing it at all.

— 부산행 (2016)

아직은 아직 기록 안 한 부분이 있어

There are still some parts I haven't recorded yet.

— 반지의 제왕: 왕의 귀환 (2003)