Synonyms of intelligent

1 Syllable

sage, smart, apt, sharp, quick, wise, keen, whiz, deep, bright

2 Syllables

witty, sapient, clever, profound, sager, wittier, highbrow, phrenic, slighty, able, foxy, cannier, thinking, discreet, with-it, brainy, sanest, sophic, foxier, knowing, ablest, brilliant, sharp-eyed, well-taught, saner, crafty, canny, ready, alert, witted, abler, savvy, savvies, bookish, craftier

3 Syllables

retiary, virtuoso, rational, reformist, logical, blue-stocking, streetwise, precocious, percipient, trainable, virtuosi, ingenious, alive, astucious, insightful, discerning, astute, quick-witted, cleverest, talented, tuned-in, broadminded, liberal, sharp-sighted, sharp-witted, capable, cleverer, teachable, advertent, instructed, well-thought-out, cerebral, observant, sensible, profoundest, sagacious, alerting, consequent, creative, acute, cultured, together, highbrowed, open-eyed

4 Syllables

resourceful, dillettante, responsible, well-advised, calculating, original, inventive, humanistic, perceptive, knowledgeable, well-informed, enlightened, nimble-witted, penetrating, perspicacious, deviceful, exceptional, reasonable, well-balanced, extensional, juridicious, educated, well-reasoned, deductive, understanding, libertarian, unbigoted, wide-awake, intentive, comprehending, intellectual, iron-willed

5 Syllables

intellective, penetrative, innovational, well-organized, liberalistic

6 Syllables

imaginative, ratiocinative, manipulative, latitudinarian