Snobby (adjective)

1. Having or showing a condescending attitude towards people considered to be of lower social status.
2. Acting superior to others.

Origin:

From snob + -y.

Examples:

1. The snobby woman looked down on those who were not as wealthy as her.
2. The snobby saleswoman was dismissive of the customer's budget.
3. The snobby waiter was rude to the customers.
4. The snobby attitude was not appreciated by the other guests.
5. The snobby behavior made the person unpopular among friends.