있지 않았다

was not

→ 있다
phrase Common #4,657
was not Often follows a verb ending in -고 to say that someone was not in an ongoing or resulting state, as in “was not wearing.”
KO: 그는 집에 있지 않았다.
EN: He wasn’t at home.

톰은 그의 방탄조끼를 입고 있지 않았다.

Tom wasn't wearing his bulletproof vest.

수잔은 그 때 피아노를 치고 있지 않았다.

Susan wasn't playing the piano at that time.