줄 몰랐어요

didn't know that

→ 줄
phrase Uncommon #10,738
didn't know that Used with a preceding verb, adjective, or noun phrase to say that the speaker did not know or realize something. The preceding form changes depending on the word: 계신 줄, 과부인 줄, 올 줄, 하는 줄.
KO: 그 사람이 선생님인 줄 몰랐어요.
EN: I didn't know that person was a teacher.

아들이 있는 줄 몰랐어요

I didn't know you had a son.

— 내 어머니의 모든 것 (1999)

계신 줄 몰랐어요

I didn't know you were here.

— F1 더 무비 (2025)

자넷 줄 몰랐어요

I didn't know it was Janet's car.

— 원스 어폰 어 타임 인… 할리우드 (2019)

그렇게 고집이 줄 몰랐어요

I didn’t realize you were that stubborn.

— 서스페리아 (1977)

과부 줄 몰랐어요

I didn't know you were a widow.

— 피케이: 별에서 온 얼간이 (2014)

이렇게 하는 줄 몰랐어요

I didn't know it was done this way.

— 추락의 해부 (2023)

시간이 이렇게 가는 줄 몰랐어요

I didn’t realize how quickly time was passing.

— 얼굴 (2025)

손님이 줄 몰랐어요

I didn’t expect any guests to come.

— 특별한 날 (1977)