is too much, is excessive, is harsh, is severe, is serious
상처가 심하군
That’s quite a serious wound.
— 레옹 (1994)
그쪽 이야말로 좀 심하군
You're the one who's being a bit much.
— 언터처블: 1%의 우정 (2011)
이 친구 진짜 심하군!
This guy is really bad!
— 물랑루즈 (2001)