/ Dictionary / Index S self-important: Meaning and Definition of Find definitions for: self-im•por•tant Pronunciation: (self'im-pôr'tnt, self"-), [key] — adj. having or showing an exaggerated opinion of one's own importance; pompously conceited or haughty. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: self-important (Thesaurus) self-immolation self-imposed Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language