supercilious
/ˌsupərˈsɪliəs/
adjective
- Behaving as if you are better or more important than other people; arrogant and condescending.
- Her supercilious tone made everyone in the room feel uncomfortable.
- He had a supercilious attitude toward anyone who didn't share his expensive tastes.
- The waiter gave a supercilious smile when I asked for a simpler dish.