/ Dictionary / Index S smart aleck: Meaning and Definition of Find definitions for: smart' al"eck Pronunciation: (al'ik), [key] an obnoxiously conceited person. a wise guy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. smart-alec smart ass Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language