잘은 모르겠지만

I don't know for sure, but

→ 잘

phrase Rare #25,124

I don't know for sure, but Often introduces a tentative opinion or guess.

KO: 잘은 모르겠지만, 그 사람은 좋은 선생님 같아요.

EN: I don't know for sure, but that person seems like a good teacher.

I'm not entirely sure, but...

— 아무도 모른다 (2004)