American Idioms – Idiom Wizard Lists Over 5,500 Idioms & Slang Descriptions

Play dumb


Act unaware. Hide one’s knowledge. Pretense of stupidity. ‘Play’ is used in the sense of acting, so the phrase suggests you are not dumb about a certain piece of knowledge, but you pretend to not know for various reasons. For example, you might play dumb about not knowing of a planned surprise party for yourself.

I asked him if he stole my bicycle, but he just acted dumb about the entire episode.”

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