못했소

couldn't, was unable to

→ 못하다
auxiliary · formal, past tense Rare #29,431
couldn't, was unable to The ending -소 is an old-fashioned, formal-sounding way of speaking.
KO: 어제는 너무 아파서 일을 못했소.
EN: I was too sick to work yesterday.
Conjugation of 못하다
Indicative past
못했습니다못했소

화물선은 아주 오래전부터 보지 못했소.

I haven't seen a cargo ship in a very long time.

그 애는 고통 때문에 울지도 못했소

The child couldn't even cry out from the pain.

— 대부 (1972)