none of business

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 “Those children should never be left alone.” “Don't tell me what to do - it's none of your business.”
See also: business, none, of
References in periodicals archive ?
None of business players will need to wonder if a needed process has or has not been completed.