turn nose up at

turn (one's) nose up at (someone or something)

To reject someone or something with disdain (which can be accompanied by literally putting one's nose in the air). Naturally, my cat keeps turning up his nose up at the expensive food I bought for him.
See also: nose, turn, up
Farlex Dictionary of Idioms.

turn one's nose up at someone or something

 
1. Lit. to raise one's head and therefore one's nose slightly as a sign of rejection. I never turn my nose up at food. I never turn up my nose at dessert, no matter what it is.
2. Fig. to sneer at someone or something; to reject someone or something. John turned his nose up at Ann, and that hurt her feelings. He turned up his nose.
See also: nose, turn, up
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • turn (one's) nose up at (someone or something)
  • turn your nose up at something
  • the nose knows
  • get up (one's) nose
  • get up somebody's nose
  • get up someone's nose
  • nose-picker
  • nose candy
  • nose job
  • keep your nose out of something