supercilious
su-per-cil-i-ous
adjective
Behaving as if one is superior to others; disdainful and arrogant.
"His supercilious smirk annoyed everyone."
Thesaurus
Synonyms: snide, uncomplimentary, sneering, swaggering, overbearing, imperious, haughty, proud, sniffy, lordly, prideful, disdainful