수밖에 없었어요

had no choice but to

→ 수+밖에
phrase Rare #27,351
had no choice but to Follows a verb and expresses that there was no alternative. The ending is polite and refers to the past.
KO: 비가 너무 많이 와서 집에 있을 수밖에 없었어요.
EN: It was raining so heavily that I had no choice but to stay home.

미안해요, 계속 갈 수밖에 없었어요

I'm sorry, I had no choice but to keep going.

— 공포의 보수 (1953)

난 그저 앉아서 지켜볼 수밖에 없었어요

I had no choice but to just sit back and watch.

— 싸이코 (1960)

가능한 한 빨리 도망칠 수밖에 없었어요

I had no choice but to run away as quickly as possible.

— 서스페리아 (1977)