않았죠

did not, was not (negates the preceding verb or adjective in the past)

→ 않다
않 not (forms a negation after -지) + 았 past tense + 죠 Polite sentence ending (confirmatory or rhetorical)
auxiliary · formal, past tense Common #4,461
did not, was not (negates the preceding verb or adjective in the past) The ending -죠 often makes the sentence sound like the speaker is seeking agreement or confirmation.
KO: 어제는 비가 오지 않았죠?
EN: It didn't rain yesterday, did it?
Conjugation of 않다

그런데 왜 얘기하지 않았죠?

But why didn't you say anything?

— 마농의 샘 2부 (1986)

이번 영화 촬영이 쉽지 않았죠?

Filming this movie wasn't easy, was it?

— 아메리카의 밤 (1973)

난 당신을 더 빨리 데리러 가지 않았죠.

I didn't come to pick you up sooner.

— 스즈메의 문단속 (2022)

마히토님 어머니 인, 히사코 마님도 함께 모습을 보이지 않았죠

Mahito’s mother, Lady Hisako, was nowhere to be seen either.

— 그대들은 어떻게 살 것인가 (2023)

배의 여주인 인 저는 그러지 않았죠.

As the mistress of the ship, I didn’t do that.

다른 건 중요하지 않았죠

Nothing else mattered, right?

— 잉글리쉬 페이션트 (1996)

하지만 그러지 않았죠.

But that wasn't the case.

— 다운폴 (2004)

아무도 말해 주지 않았죠!

Nobody told me!

— 이탈자 (1990)

그런데 오지 않았죠

But you didn't come, did you?

— 이중 배상 (1944)

죽이진 않았죠?

You didn't kill him, did you?

— 순응자 (1971)

하지만 돌아오지 않았죠

But they never came back.

— 원스 어폰 어 타임 인… 할리우드 (2019)

다치지 않았죠?

You're not hurt, are you?

— 파이트 클럽 (1999)

아이 어머니가 말해주지 않았죠

The child's mother didn't tell you, did she?

— 폭풍의 시간 (2018)