| Main Entry: | |
| 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: | acute |
| Part of Speech: | adjective |
| Definition: | deeply perceptive |
| Synonyms: | astute, canny, clever, discerning, discriminating, incisive, ingenious, insightful, intense, intuitive, judicious, keen, observant, penetrating, perspicacious, piercing, quick-witted, sensitive, sharp, smart, subtle |
| Antonyms: | dense, imperceptive, insensitive, obtuse, slow, stupid |
| Main Entry: | adroit |
| Part of Speech: | adjective |
| Definition: | very able or skilled |
| Synonyms: | adept, apt, artful, clean, clever, crack*, crackerjack*, cunning, cute, deft, dexterous, expert, foxy*, good, handy, hot tamale, ingenious, masterful, neat*, nifty*, nimble, on the ball, on the beam, proficient, quick on the trigger, quick on the uptake, quick-witted, savvy, sharp, skillful, slick, smart, up to speed, up*, whiz*, wizard |
| Antonyms: | awkward, clumsy, dense, inept, stupid, unskilled |
| Main Entry: | agile |
| Part of Speech: | adjective |
| Definition: | physically or mentally nimble, deft |
| Synonyms: | active, acute, alert, athletic, brisk, buoyant, bustling, clever, dexterous, easy-moving, energetic, fleet, frisky, limber, lithe, lively, mercurial, prompt, quick, quick on the draw, quick on the trigger, quick-witted, rapid, ready, sharp, spirited, sportive, spright, sprightly, spry, stirring, supple, swift, twinkle toes, vigorous, vivacious, winged, zippy |
| Antonyms: | brittle, clumsy, stiff |
| Main Entry: | alert |
| Part of Speech: | adjective |
| Definition: | attentive, lively |
| Synonyms: | active, all ears, bright, cagey, careful, circumspect, clever, fast on the draw, good hands, heads up, heedful, hip, intelligent, jazzed, observant, on guard, on one's toes, on the ball, on the job, on the lookout, on the qui vive, perceptive, psyched up, quick, ready, sharp, spirited, switched on, vigilant, wary, watchful, wide-awake, wired, wise, with it |
| Antonyms: | asleep, drowsy, inattentive, lethargic, sluggish, unobservant, weary |
| 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 |
| Antonyms: | incapable, stupid, unskilled |
| Main Entry: | artful |
| Part of Speech: | adjective |
| Definition: | skillful; cunning |
| Synonyms: | adept, adroit, clever, crafty, designing, dexterous, foxy*, ingenious, masterly, politic, proficient, resourceful, scheming, sharp, shrewd, slick*, sly, smart, smooth*, tricky, wily |
| Antonyms: | artless, ingenuous, naive, unskillful |
| Main Entry: | astute |
| 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: | brainy |
| Part of Speech: | adjective |
| Definition: | intelligent |
| Synonyms: | bright, brilliant, clever, intellectual, sapient, smart |