verb · to act in a stupid, silly, or senseless manner

你别再犯傻了，这种骗局你也信？

verb · to pretend not to know something or feign ignorance

事到如今，你还跟我犯傻，假装不知道？

verb · to look dazed, vacant, or in a state of stupor

他坐在窗边犯傻，一句话也不说。