Pronunciation (US) IPA (key): /smɑrt/ (UK) IPA (key): /smɑːt/ Audio (US)(file) Adjective Positive smart Comparative smarter Superlative smartest Someone who is smart shows intelligence. Synonym: clever My friend is really smart; he has an IQ of 152. You know algebra? Wow, you're smart! You took the shortcut? That was smart! Related words smartnessWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads