none of (one's) business

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none of (one's) business

Something that is of no concern to another. It's really none of his business what I do with the money I earn.
See also: business, none, of

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

(It's) none of your business!

It is nothing that you need to know. It is none of your concern. (Not very polite.) Alice: How much does a little diamond like that cost? Mary: None of your business! John: Do you want to go out with me Friday night? Mary: Sorry, I don't think so. John: Well, what are you doing then? Mary: None of your business!
See also: none, of

none of one's business

Not one's concern, as in How much I earn is none of your business. This expression employs business in the sense of "one's affairs," a usage dating from about 1600. (Also see mind one's own business.) A slangy, jocular variant from about 1930 is none of one's beeswax. The related verb phrase have no business is used to indicate that one should not meddle or interfere, as in He has no business discussing the will with outsiders.
See also: business, none, of
References in classic literature ?
But Ozma interfered, although it was none of her business, and marched her army against us.
But the king checked her and made her understand, with a polite phrase or two, that this was none of her business.
London, Dec 8 (ANI): Brit actress/designer Sadie Frost has declared that it is none of her business if ex-husband actor Jude Law and actress Sienna Miller are back together.
And if you swallow that then you'll also believe that Betty decides it's none of her business when she finds the charred wedding invitation in the grate.
But in a terse letter, Mr Cook told Ms Hyslop it was a matter for Westminster and none of her business.
She was told by a manager to keep quiet and that it was none of her business.