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must not forget

→ 잊다
phrase Rare #20,281
must not forget A casual way to say that someone must not forget something; the subject is often omitted.
KO: 약속을 잊으면 안 돼.
EN: You mustn’t forget the appointment.

친구를 잊으면 안 돼

You mustn't forget your friends.

— 걸리 보이 (2019)

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Don't forget.

— 그을린 사랑 (2010)