계셨군요

was, were

→ 계시다

계셨 past tense (honorific) + 군 Realization/exclamation + 요 Polite

auxiliary · past admirative Rare #18,897

was, were Honorific auxiliary used with -고 있다 to indicate that someone was doing something or was in a state.

KO: 선생님께서 학생들을 기다리고 계셨군요.

EN: The teacher was waiting for the students.

Conjugation of 계시다

Admirative past

계셨군요

So you knew all along.

— 위키드 (2024)

Oh, you knew.

— 안드레이 루블료프 (1966)