말 못 들었어

didn’t hear what was said

→ 말
phrase Rare #32,196
didn’t hear what was said 말 means “words” or “what someone said”; the speaker or words being referred to depend on context.
KO: 미안, 네 말 못 들었어.
EN: Sorry, I didn’t hear what you said.

의사가 한 말 못 들었어?

Didn't you hear what the doctor said?

— 굿바이, 레닌 (2003)

내 말 못 들었어?

Didn't you hear what I said?

— 파이트 클럽 (1999)