supercilious
Reynolds superciliously explained that they were actually helping his business.
She looked down at them superciliously as she passed.
While Darya was speaking, she listened, pressing her lips superciliously.
In the interview, he was superciliously brusque.

SMART Vocabulary: related words and phrases

Showing arrogance and conceit
(as) proud as Luciferidiom
airs and gracesidiom
arrogant
arrogantly
as if you owned the placeidiom
egoistic
egoistically
egomaniacal
egomaniacally
egotistic
patronizing
patronizingly
pomposity
pompous
pompously
swollen head
swollen-headed
talk down to someone
think the (whole) world revolves around youidiom
throw your weight aroundidiom