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Adjective: supercilious  ,soo-pu(r)'si-lee-us
  1. Having or showing arrogant superiority to and disdain of those one views as unworthy
    "his mother eyed my clothes with a supercilious air";
    - disdainful, haughty, imperious, lordly, overbearing, prideful, sniffy [informal], swaggering, toplofty [US, informal], orgulous [archaic]
  2. Expressive of contempt
    "curled his lip in a supercilious smile";
    - sneering, snide

See also: proud, uncomplimentary