않았거나

In a sentence

• 그는 학교에 가지 않았거나 숙제를 하지 않았을 것입니다.

  He must have either not gone to school or not done his homework.

  않았거나 is used as a logical operator indicating an alternative between two negative actions.

• 비가 오지 않았거나 바람이 불지 않았을 때 나갔어요.

  I went out when it either was not raining or it was not windy.

  않았거나 connects two negative verbs to offer alternate conditions.

• 영화를 보지 않았거나 책을 읽지 않았습니다.

  I didn't either watch the movie or read the book.

  않았거나 provides a choice between two actions that did not occur.