look down (one's) nose at (someone or something)

look down (one's) nose at (someone or something)

To regard oneself as superior to others and thus act in a haughty or snobbish manner. The well-dressed businessman looked down his nose at the homeless man sitting on the corner. Once Jane was promoted to management, she looked down her nose at the people who used to be her colleagues.
See also: down, look, nose
Farlex Dictionary of Idioms.

look down your nose at something

INFORMAL
COMMON If someone looks down their nose at a thing or person, they regard that thing or person as inferior and treat them with disrespect. I get the impression they look down their noses at people who are not dressed in expensive labels. I thought he'd look down his nose at pop music. Note: You use this expression to show that you disapprove of this attitude.
See also: down, look, nose, something
Collins COBUILD Idioms Dictionary, 3rd ed.

look down your nose at

despise. informal
See also: down, look, nose
Farlex Partner Idioms Dictionary

look down your ˈnose (at somebody/something)

(informal, especially British English) behave in a way that suggests that you think that you are better than somebody, or that something is not good enough for you: Why do you always look down your nose at people who have less money than you?
See also: down, look, nose
Farlex Partner Idioms Dictionary

look down (one's) nose

at/on
To regard with contempt or condescension.
See also: down, look, nose
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • look down nose
  • look down your nose
  • look down your nose at
  • look down your nose at something
  • look down on
  • look down on (someone or something)
  • look down upon (someone or something)
  • down (one's) nose
  • down nose
  • stick nose up in the air