supercilious

Adjective

Synonyms: disdainful haughty imperious lordly overbearing prideful sniffy swaggering sneering snide

WordNet 3.0

Adjective (2)

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”Synonyms: disdainful haughty imperious lordly overbearing prideful sniffy swaggering
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”Synonyms: sneering snide

Webster's Dictionary (GCIDE)

Supercilious \Su`per*cil"i*ous\, a. [L. superciliosus, fr. supercilium an eyebrow, pride; super over, + cilium an eyelid; probably akin to celare to conceal. Cf. Conceal.] Lofty with pride; haughty; dictatorial; overbearing; arrogant; as, a supercilious officer; asupercilious air; supercilious behavior. -- Su`per*cil"i*ous*ly, adv. -- Su`per*cil"i*ous*ness, n. [1913 Webster]