supercilious

supercilious
adj.
expressive of contempt
curled his lip in a supercilious smile|spoke in a sneering jeering manner|makes many a sharp comparison but never a mean or snide one
adj.
having or showing arrogant superiority to and disdain of those one views as unworthy
some economists are disdainful of their colleagues in other social disciplines|haughty aristocrats|his lordly manners were offensive|walked with a prideful swagger|very sniffy about breaches of etiquette|his mother eyed my clothes with a supercilious air|a more swaggering mood than usual