stick nose in

stick (one's) nose in(to) (something)

To involve oneself in an intrusive or nosy manner into something that is not one's business or responsibility. I wish my neighbors would quit sticking their noses in and just leave us alone! Liam, don't stick your nose into your brother's affairs—he can manage well enough on his own.
See also: nose, stick
Farlex Dictionary of Idioms.

stick one's nose in

(to something) Go to poke one's nose in(to something).
See also: nose, stick
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • stick (one's) nose (in) where it's not wanted
  • stick (one's) nose in(to) (something)
  • stick one’s nose in
  • stick one’s nose in where it’s not wanted
  • put (one's) nose (in) where it's not wanted
  • put (one's) nose in(to) (something)
  • put nose in
  • put one’s nose in
  • put one’s nose in where it’s not wanted
  • poke your nose into something