Snobbery (noun)

The attitude or behavior of a snob; the belief that one's own tastes, social class, or achievements are superior to those of others.

Origin:

Derived from the word "snob" which originally referred to a shoemaker or a person of low birth, later it was used to describe those who pretended to be of a higher social class.

Examples:

1. She was criticized for her snobbery and her tendency to look down on others.
2. He was accused of snobbery for only associating with the elite.
3. The snobbery of the wealthy was on full display at the event.
4. Her snobbery prevented her from forming any real friendships.
5. His snobbery was evident in the way he spoke to the wait staff.