| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | perceptive |
| Synonyms: | adroit, brainy, bright, calculating, canny, clever, crafty, discerning, foxy, insightful, intelligent, keen, knowing, not born yesterday, on the ball, perspicacious, quick on the uptake, sagacious, savvy, sharp, sharp as a tack, shrewd, sly |
| Antonyms: | asinine, idiotic, ignorant, imbecile, obtuse, shallow, stupid, thick, unintelligent |
| Main Entry: | apt |
| Part of Speech: | adjective |
| Definition: | quick to learn |
| Synonyms: | able, adept, astute, bright, clever, expert, gifted, ingenious, intelligent, no dummy, nobody's fool, not born yesterday, prompt, quick on the trigger, quick on the uptake, ready, savvy, sharp, skilled, skillful, smart, talented, teachable |
| Notes: | apt is for general probabilities, likely is for specific probabilities; liable and prone indicate a probability arising as a regrettable consequence |
| Antonyms: | incapable, stupid, unskilled |
| Main Entry: | bright |
| Part of Speech: | adjective |
| Definition: | intelligent |
| Synonyms: | Einstein, acute, advanced, alert, astute, aware, brainy, brilliant, clear-headed, clever, discerning, eggheaded, having smarts, ingenious, inventive, keen, knowing, precocious, quick, quick-witted, sharp, smart, whiz kid, wide-awake |
| Antonyms: | dull, stupid, unaware, unintelligent |
| Main Entry: | brilliant |
| Part of Speech: | adjective |
| Definition: | very intelligent |
| Synonyms: | Einstein, accomplished, acute, astute, brainy, bright, clever, discerning, eggheaded, expert, genius, gifted, ingenious, intellectual, inventive, knowing, knowledgeable, masterly, penetrating, profound, quick, quick-witted, sharp, smart, talented, whip, whiz kid |
| Antonyms: | stupid, unaware, unintelligent |
| Main Entry: | canny |
| Part of Speech: | adjective |
| Definition: | clever, artful |
| Synonyms: | able, acute, adroit, astute, cagey, careful, cautious, circumspect, cunning, dexterous, discreet, foxy*, frugal, having fancy footwork, hep, ingenious, intelligent, judicious, knowing, nimble-witted, perspicacious, prudent, quick, quick-witted, sagacious, shrewd, skillful, slick, slippery*, sly, smart, smooth*, street smart, streetwise, subtle, wary, watchful, wise, with it, worldly-wise |
| Antonyms: | foolish, inept, silly |
| Main Entry: | clever |
| Part of Speech: | adjective |
| Definition: | bright, ingenious |
| Synonyms: | able, adept, adroit, alert, apt, astute, brainy, brilliant, cagey, canny, capable, competent, crackerjack*, cunning, deep, dexterous/dextrous, discerning, egghead, expert, foxy*, gifted, good, handy, intelligent, inventive, keen, knowing, knowledgeable, many-sided, nimble, nobody's fool, pretty, pro, qualified, quick, quick on trigger, quick-witted, rational, resourceful, sagacious, savvy, sensible, sharp, shrewd, skilled, skillful, slick, sly, smart, sprightly, talented, versatile, wise, witty |
| Antonyms: | awkward, foolish, idiotic, ignorant, naive, senseless, stupid, unclever |
| Main Entry: | common-sense |
| Part of Speech: | adjective |
| Definition: | reasonable |
| Synonyms: | astute, commonsensical, cool, down-to-earth, hard-headed, judicious, levelheaded, matter-of-fact, practical, rational, realistic, sane, sensible, shrewd, sound |
| Antonyms: | foolish, impractical, insane, unreasonable, unsensible, unsound |
| Main Entry: | crafty |
| Part of Speech: | adjective |
| Definition: | clever, scheming |
| Synonyms: | adroit, artful, astute, cagey, calculating, canny, crazy like fox, cunning, deceitful, deep, designing, devious, disingenuous, duplicitous, foxy*, fraudulent, guileful, insidious, intelligent, keen, knowing, sharp, shrewd, slick, slippery*, sly, smart, smooth, street smart, streetwise, subtle, tricky, vulpine, wily |
| Antonyms: | honest, naive, unclever |
| Main Entry: | cunning |
| Part of Speech: | adjective |
| Definition: | devious |
| Synonyms: | Machiavellian, acute, artful, astute, cagey, canny, crafty, crazy like fox, deep, fancy footwork, foxy, guileful, insidious, keen, knowing, sharp, shifty, shrewd, slick, slippery, sly, sly boots, smart, smarts, smooth, street-smart, streetwise, subtle, tricky, wary, wily |
| Antonyms: | gullible, kind, naive, shy |