straight-faced
UKUS
Definitions
adj.
Maintaining a serious, expressionless face, especially while joking
面无表情的；一本正经（忍住不笑）的
Root Breakdown
Native Englishstraightroot
+
facedroot
=straight-faced
straight + faced = keeping the face 'straight' — controlled and serious, refusing to show amusement.
Common Collocations
- 1.remain straight-faced保持严肃
- 2.stay straight-faced忍住不笑
- 3.keep a straight face绷住脸不笑
Example Sentences
- 1.
She delivered the joke straight-faced, and we couldn't tell if she meant it.