disdainful, haughty, imperious, lordly, overbearing, prideful, sniffy, supercilious, swaggering (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"- W.L.Shirer

supercilious, sneering, snide (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"

supercilious (Adjective)

Arrogantly superior; showing contemptuous indifference; haughty.