A/V-(으)ㄹ 줄 몰랐다
I had no idea it would …
Used when things turn out differently from what you expected. The stem takes -(으)ㄹ 줄 to package up what would happen, and 몰랐다 says you did not see it coming. The tone carries surprise, which can be delight or complaint. Flip it to -(으)ㄹ 줄 알았다 and it means you assumed it would.
접속 conjugation
- A stem ending in a vowel or ㄹ takes -ㄹ 줄; a consonant ending takes -을 줄: 오다 → 올 줄 ／ 힘들다 → 힘들 줄 ／ 좋다 → 좋을 줄
- For something already done, use the past -았/었을 줄: 벌써 끝났을 줄 몰랐어요
- Swapping in 생각 못 했다 or 상상도 못 했다 makes the surprise stronger: 이렇게 비쌀 줄은 생각도 못 했어요
예문
EXAMPLES
서류 하나 떼는 데 돈이 이렇게 많이 들 줄 몰랐어요.
I had no idea a single document would cost this much to get.from 2026.09.16 Wed the examples
다음 주 계약 건에 보증보험 증권이 필요한데, 발급이 이렇게 오래 걸릴 줄 몰랐습니다.
Next week's contract needs a surety bond certificate, and I had no idea issuing one took this long.from 2026.09.16 Wed the business dialogue
그 영화가 이렇게 슬플 줄 몰랐어요.
I had no idea that film would be such a tearjerker.from 2026.09.17 Thu the examples
표가 벌써 다 팔렸을 줄 몰랐어요.
I had no idea the tickets were already sold out.from 2026.09.17 Thu the examples
그래도 좀…. 솔직히 네가 이런 데 나갈 줄 몰랐어.
Still… honestly, I had no idea you'd go to something like this.from 2026.09.17 Thu the everyday dialogue
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