두면

put, place, leave

→ 두다
verb · conditional Rare #22,901
put, place With -면, means “if/when you put or place.”
KO: 책을 책상 위에 두면 나중에 찾기 쉬워요.
EN: If you put the book on the desk, it will be easy to find later.
leave With -면, means “if/when you leave something in a certain state or place.”
KO: 문을 열어 두면 바람이 잘 통해요.
EN: If you leave the door open, the air flows well.
Conjugation of 두다
Conditional
두면

그냥 제 방에 두면 안 돼요?

Can't I just leave it in my room?

— 더스트 버니 (2025)

두면 안 되니까 태워

Burn it—you can't leave it lying around.

— 인생 (1994)

두면 좋을 지도 모른다.

It might be a good idea to buy it.