아는 줄 알았는데

I thought you knew

→ 알다
phrase Rare #16,861
I thought you knew The person who knew is understood from context. The ending can imply a contrast, like “but I thought you knew.”
KO: 너도 이미 아는 줄 알았는데.
EN: I thought you already knew too.

아는 줄 알았는데 내가 어떻게 알아?

I thought I knew, but how would I know?

— "폭풍의 언덕" (2026)

아는 줄 알았는데, 몰랐구나?

I thought you knew, but you didn't?

— Wonderland (2024)

아는 줄 알았는데

I thought you knew.

— 오펜하이머 (2023)