/ Dictionary / Index S supercilious: Meaning and Definition of Find definitions for: su•per•cil•i•ous Pronunciation: (s"pur-sil'ē-us), [key] — adj. haughtily disdainful or contemptuous, as a person or a facial expression. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: supercilious (Thesaurus) superciliary ridge supercilium Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language