/ Dictionary / Index S smug: Meaning and Definition of Find definitions for: smug Pronunciation: (smug), [key] — smug•ger, smug•gest. contentedly confident of one's ability, superiority, or correctness; complacent. trim; spruce; smooth; sleek. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: smug (Thesaurus) smudgy smuggle 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