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3. none of business

none of business

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none of someone's business

not of someone's concern. (A gentle rebuke.) Q: When are you going to leave for home? A: None of your business. How I managed to afford all this is none of your business.

See also: business, none, of

none of your business

also nobody's business

do not interest yourself in matters that do not involve you a€?Those children should never be left alone.a€? a€?Don't tell me what to do - it's none of your business.a€?

See also: business, none, of