Yap.Town

알았는데

knew, found out, thought

→ 알다
verb · informal, past tense Rare #23,521
knew, found out The ending -는데 often connects this to a following contrast or explanation.
KO: 나는 그 소식을 어제 알았는데 아무에게도 말하지 않았어.
EN: I found out the news yesterday, but I didn’t tell anyone.
thought Can describe what someone believed or understood to be true.
KO: 나는 네가 집에 있는 줄 알았는데.
EN: I thought you were at home.
Conjugation of 알다

같이 살았던 남자 한테 아들 있다는 걸 방금 알았는데 지금 여기 와 있잖아!

I just found out that the man I used to live with has a son, and he’s here right now!

— 신경쇠약 직전의 여자 (1988)

어떻게 알았는데?

How did you know?

— Oldboy (2003)