su·per·cil·ious
adjective \ˌsü-pər-ˈsi-lē-əs, –ˈsil-yəs\
: having or showing the proud and unpleasant attitude of people who think that they are better or more important than other people
Full Definition of SUPERCILIOUS
: coolly and patronizingly haughty <reacted to their breach of etiquette with a supercilious smile>
— su·per·cil·ious·ly adverb
— su·per·cil·ious·ness noun
Examples of SUPERCILIOUS
Origin of SUPERCILIOUS
Latin superciliosus, from supercilium eyebrow, haughtiness, from super- + -cilium eyelid (akin to celare to hide) — more at hell
First Known Use: 1614