keep (one's) nose out of (someone's) business

keep (one's) nose out of (someone's) business

To refrain from involving oneself in an intrusive or nosy manner with something that is someone else's business, responsibility, or private affair. I wish my neighbors would keep their noses out of our business and just leave us alone! Tom, keep your nose out of your brother's business—he can manage well enough on his own.
See also: business, keep, nose, of, out
Farlex Dictionary of Idioms.

keep one's nose out of someone's business

Fig. to refrain from interfering in someone else's business. (See also keep one's nose out of something.) Let John have his privacy, and keep your nose out of my business, too! Keep your nose out of my business!
See also: business, keep, nose, of, out
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

Keep your nose out of my business!

verb
See Get your nose out of my business!
See also: keep, nose, of, out
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • keep nose out of business
  • Keep your nose out of my business!
  • get (one's) nose out of (someone's) business
  • get nose out of business
  • Get your nose out of my business!
  • stick (one's) bib in
  • stick your bib in
  • poke (one's) bib in
  • put nose in
  • put one’s nose in where it’s not wanted