C2 adjective /ˌsuː.pɚˈsɪl.i.əs/
supercilious
arrogante
Meaning
Behaving or looking as though one thinks one is superior to others; arrogant and disdainful.
Example
She gave him a supercilious smile as if he was beneath her.
Ella le dio una sonrisa arrogante como si él estuviera por debajo de ella.