When your face shows no emotion, especially when you are trying not to laugh, you keep a straight face.
Don't laugh, try and keep a straight face or she will know you are joking.
His new hairstyle is so funny I found it hard to keep a straight face.
When you lose face you feel you have lost the respect of others because of something you have done. When feel embarrassed when you lose face.
He didn't understand the lecture but he said he did because he did not want to lose face in front of his classmates.
He lost face when his much younger brother took the test and did better than him.
You have a long face when you look sad.
What's happened to James? He has a long face this morning.
"Why the long face?" "I had some bad news."
You have egg on your face when you get caught doing something wrong. It's an embarrassing situation.
The President has egg on his face after journalists found out he was lying.
The company has egg on its face after its new product turned out to be faulty.
You face it when you accept the truth, usually about something unpleasant.
Face it, unless we start making a profit soon we will go bankrupt.
I had to face up to the fact that I'm getting too old for nightclubs.