what's the use?

what’s the use? spoken phrase

used for saying that something is not likely to have a successful result, and so there is no point in doing it

What’s the use? We’re bound to lose anyway.

what’s the use of doing something?:

What’s the use of complaining?

Thesaurus: likely to fail_synonym

Main entry: use

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it's no ˈuse (doing sth) | what's the ˈuse (of doing sth)? idiom

used to say that there is no point in doing sth because it will not be successful or have a good result

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What's the use of worrying about it?

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It's no use— I can't persuade her.

Main entry: ↑use_idiom