must tell, should tell (respectfully)
하지만 말씀드려야 해요
But I have to tell you.
— 시라트 (2025)
어떻게 말씀드려야 할지 몰랐어요
I didn't know how to tell you.
— 내 어머니의 모든 것 (1999)
이건 사실대로 말씀드려야 합니다!
I have to tell you the truth about this!
— Pandora (2016)
말씀드려야 할 게 있습니다.
I have something to tell you.
— 다운폴 (2004)