put on a brave face | put a brave face on somethingidiomPart ofbraveput on a brave face | put a brave face on somethingput on a brave face | put a brave face on something — idiomidiom1. to act calm and cheerful so other people do not see your worry or pain.1.idiomDefinitionto act calm and cheerful so other people do not see your worry or pain.ExampleNadia put on a brave face before speaking to her children.After the test result, Bao put a brave face on his fear.