straight face

1. 1.

   a serious facial expression giving no evidence of interest or amusement

   Broaderfacial expression

Questions about straight face

What does straight face mean?

straight face means "a serious facial expression giving no evidence of interest or amusement".

Is straight face a common word?

straight face is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.