English version

keep a straight face

From Longman Dictionary of Contemporary Englishkeep a straight facekeep a straight faceto not laugh or smile, even though something is funny face
Examples from the Corpus
keep a straight faceWith a completely straight face, Thomas announced he was joining the Girl Guides.How can you say that and keep a straight face?I try and keep a straight face, but I can't help grinning at myself.I keep a straight face and the composure of a chemist dispensing a prescription.The old trick of keeping a straight face was failing him these days.It was very difficult to keep a straight face.When reading some of the competition entries, it was hard to keep a straight face.She looked so ridiculous it was hard to keep a straight face.He looked so ridiculous -- I don't know how I managed to keep a straight face.Barbara tried to keep a straight face, but in the end she just couldn't help laughing."I think I've lost that camera you lent me, " I said, trying to keep a straight face.For the first hundred yards we keep straight faces.
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