뒀는데

put, left, placed

→ 두다
뒀 Past tense + 는데 Background/contrast connective
verb · informal, imperfect tense Rare #28,111
put, left, placed Past form of 두다; -는데 often connects to what follows or adds background or contrast.
KO: 열쇠를 책상 위에 뒀는데 지금 없어요.
EN: I left the keys on the desk, but they’re not there now.
Conjugation of 두다
Indicative imperfect
뒀는데

어제 분명히 제자리에 뒀는데 맹세코 내가 아냐

I swear it wasn't me—I definitely put it back where it belonged yesterday.

— 400번의 구타 (1959)

어디 뒀는데?

Where did you put it?

— 스파이더맨: 뉴 유니버스 (2018)