| 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: | 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: | 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: | quick |
| Part of Speech: | adjective |
| Definition: | smart |
| Synonyms: | able, active, acute, adept, adroit, all there, apt, astute, bright, canny, capable, clever, competent, deft, dexterous, discerning, effective, effectual, intelligent, keen, knowing, nimble-witted, on the ball, perceptive, perspicacious, prompt, quick on the draw, quick on the trigger, quick on the uptake, quick-witted, ready, receptive, savvy*, sharp, sharp as a tack, shrewd, skillful, slick, smart as a whip, vigorous, whiz*, wired, wise |
| Antonyms: | ignorant, slow, stupid, uneducated |
| Main Entry: | sharp |
| Part of Speech: | adjective |
| Definition: | perceptive, quick-witted |
| Synonyms: | acute, adroit, alert, apt, astute, brainy, bright, brilliant, canny, clever, critical, cute, discerning, discriminating, fast, foxy*, having smarts, ingenious, intelligent, keen, knowing, nimble, nobody's fool, not born yesterday, observant, on the ball, original, penetrating, penetrative, quick, quick on the trigger, quick on the uptake, ready, resourceful, savvy*, sensitive, slick, smart, smart as a tack, subtle, wise |
| Antonyms: | ignorant, stupid, unintelligent |