두었다

did ... ahead of time, left ... done

→ 두다
auxiliary · past tense Uncommon #7,705
did ... ahead of time, left ... done Used after a verb to show that an action was done in advance or its result was left in place.
KO: 창문을 열어 두었다.
EN: I left the window open.
Conjugation of 두다

오후에는 노스스타를 몰고 나가도 된다고 말해 두었다.

I told them they could take the Northstar out in the afternoon.

광고도 다시 정리해 두었다.

I also reorganized the ads.

그 금액은 두 번이나 확인해 두었다.

I checked that amount twice.

키스가 우리와 함께 갈 사람들을 골라 두었다.

Keith has picked out the people who will go with us.

엄마가 몇 가지 먹을 걸 넣어 두었다

Mom packed a few things to eat.

— 주토피아 (2016)

그 점은 미리 생각해 두었다.

I had thought of that in advance.