오전에

in the morning

→ 오전
phrase Rare #32,203
in the morning Refers to the morning hours, before noon. It can also mean “in the morning” of a particular day when paired with a day or date.
KO: 오전에 도서관에 갈 거예요.
EN: I’m going to the library in the morning.

거긴 오전에 갔어야 해

You should have gone there in the morning.

— 자전거 도둑 (1948)

예, 오전에 나왔습니다, 형님

Yes, I came out this morning, bro.

— Failan (2001)