(idiom) To behave in a manner appropriate to one's age.
Act your age and stop fiddling with that pen – you’re showing us up.
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(imperative, originally, US) To behave in a mature manner; to avoid being childish.
Act your age and stop fiddling with that pen – you’re showing us up.
No comments yet — say something.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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Browse all slang words starting with A.