전혀 모르고

not know at all

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phrase Rare #27,650
not know at all Often connects to another clause or appears with 있다 to mean “not know at all.”
KO: 저는 그 사실을 전혀 모르고 있었어요.
EN: I had no idea about that.

전혀 모르고 계세요

You have no idea.

— 헤어질 결심 (2022)

정보 분석이 뭔지 전혀 모르고 있군

You have no idea what information analysis is.

— 학살기관 (2017)

당신 지금 뭘 건드린 건지 전혀 모르고 있군요?

You have absolutely no idea what you just touched.

— 발레리나 (2025)