turn up one's nose

To disdain the undershirt on the grounds that it’s “uncouth” is to turn up one’s nose at the blue-collar shirt sometimes worn over it.

Mistress Boris began to mutter under her breath that it was absurd and affected to turn up one's nose at these respectable eatables, which were quite as good as those they had eaten in their grandfather's house.

I know it's the fashion," Mr. Fischer said, "to turn up one's nose at steamer acquaintances.

I know that it is prettier to turn up one's nose at ready cash.