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알았군

knew, realized, found out

→ 알다
verb · informal, past tense Rare #26,799
knew, realized, found out The ending -군 conveys that the speaker has just realized or noticed something.
KO: 그가 정말 친절한 사람이라는 걸 알았군.
EN: I realized he’s a really kind person.
Conjugation of 알다
Admirative past
알았군

내가 올 걸 알았군

You knew I was coming.

— 존 윅 4 (2023)

문제의 원인을 알았군

So you figured out what was causing the problem.

— 스테이션 7 (2017)