put up or shut up

put up or shut up (informal)

if you say someone should put up or shut up, you mean they should either take action in order to do what they have been talking about or stop talking about it. You keep saying you're going to ask her out. Well, put up or shut up.

See also: shut

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put up or shut up

either improve a bad situation or stop complaining about it. My father would not say, “Put up or shut up,” but that's what he clearly meant.

See also: shut