keen

Synonyms delicate, fine, keen, perceptive, quick, sensitive, sharp

Related Words accurate, clear, discerning, good, piercing, precise, receptive, sensible, subtle; hair-trigger, hyperacute, hypersensitive, oversensitive, supersensitive

Near Antonyms bad, deadened, dimmed, dull, dulled, fading; dead, imperceptive, insensible, insensitive, numb; imprecise, inaccurate

Synonyms biting, bitter, keen, penetrating, piercing, raw, sharp, shrewd, smarting, stinging

Related Words brisk, invigorating, nippy, snappy; needlelike, prickly, tingling; caustic, corrosive

Near Antonyms balmy, gentle, mild, soothing

Synonyms cutting, edged, edgy, ground, honed, keen, sharpened, stropped, trenchant, whetted

Related Words clawlike, daggerlike, knifelike; jabbing, jagged, lacerating, piercing, scratching, stabbing; pointed, pointy, spiky (also spikey)

Near Antonyms rounded, smooth; soft; even, flat, level, slick

Antonyms blunt, blunted, dull, dulled, obtuse

Synonyms alert, brainy, bright, brilliant, clever, exceptional, fast, hyperintelligent, keen, nimble, quick, quick-witted, sharp, sharp-witted, smart, supersmart, ultrasmart

Related Words apt, ingenious, resourceful; acute, astute, discerning, heady, insightful, knowing, perceptive, percipient, perspicacious, sagacious, sapient, savvy, wise; cerebral, erudite, genial, highbrow, knowledgeable, learned, literate, scholarly, well-read; educated, informed, schooled, skilled, trained; creative, inventive, judicious, prudent, sage, sane, sapient, sensible, sound, wise; crafty, cunning, foxy, shrewd, wily; logical, rational, reasonable

Near Antonyms feebleminded, simpleminded; boobish, foolish, half-baked, idiotic (also idiotical), imbecile (or imbecilic), moronic, silly; ignorant, illiterate, lowbrow, nonintellectual, unacademic, uneducated, uninformed, unintellectual, untaught, unthinking; absurd, asinine, balmy, cockeyed, crackpot, crazy, cuckoo, daffy, daft, dippy, dotty, featherheaded, fool, half-baked, harebrained, insane, kooky (also kookie), loony (also looney), lunatic, mad, nonsensical, nutty, preposterous, sappy, screwball, tomfool, unwise, wacky (also whacky), zany

Antonyms airheaded, birdbrained, boneheaded, brain-dead, brainless, bubbleheaded, chuckleheaded, dense, dim, dim-witted, doltish, dopey (also dopy), dorky [slang], dull, dumb, dunderheaded, empty-headed, fatuous, gormless [chiefly British], half-witted, knuckleheaded, lamebrain (or lamebrained), lunkheaded, mindless, obtuse, opaque, pinheaded, senseless, simple, slow, slow-witted, soft, softheaded, stupid, thick, thickheaded, thick-witted, unbrilliant, unintelligent, unsmart, vacuous, weak-minded, witless

Synonyms A-OK, A1, awesome, bang-up, banner, beautiful, blue-chip, blue-ribbon, boffo, bonny (also bonnie) [chiefly British], boss [slang], brag, brave, bully, bumper, capital, choice, classic, cool [slang], corking, crackerjack, cracking, dandy, divine, dope [slang], down [slang], dynamite, fab, fabulous, famous, fantabulous [slang], fantastic, fine, first-class, first-rate, first-string, five-star, four-star, frontline, gangbusters (also gangbuster), gilt-edged (or gilt-edge), gone [slang], grand, great, groovy, heavenly, high-class, hot, hype [slang], immense, jim-dandy, keen, lovely, marvelous (or marvellous), mean, neat, nifty, noble, number one (also No. 1), numero uno, out-of-sight [slang], par excellence, peachy, peachy keen, phat [slang], prime, primo [slang], prize, prizewinning, quality, radical [slang], righteous [slang], sensational, slick, splendid, stellar, sterling, superb, superior, superlative, supernal, swell, terrific, tip-top, top, top-flight, top-notch, top-of-the-line, topping [chiefly British], top-shelf, unsurpassed, wizard [chiefly British], wonderful

Related Words acceptable, adequate, all right, decent, good, OK (or okay), passable, satisfactory, tolerable; better, exceptional, fancy, high-grade, high-test, premium, select, special, superfine; classical, standard, traditional

Near Antonyms bad, inferior, low-grade, substandard, unsatisfactory; mediocre, middling, second-class, second-rate

Antonyms atrocious, awful, execrable, lousy, pathetic, poor, rotten, terrible, vile, wretched

Synonyms agog, antsy, anxious, ardent, athirst, avid, crazy, desirous, enthused, enthusiastic, excited, geeked [slang], great, greedy, gung ho, hepped up, hopped-up, hot, hungry, impatient, juiced, keen, nuts, pumped, raring, solicitous, stoked [slang], thirsty, voracious, wild

Related Words engaged, interested; happy, hung up, obsessed; ambitious, appetent, covetous, craving, hankering, longing, pining; breathless, restive, restless; amenable, disposed, game, glad, inclined, ready, unreluctant, willing

Near Antonyms casual, incurious, insouciant, nonchalant, unconcerned, uninterested; aloof, detached, disinterested; impassive, stolid; halfhearted, lackadaisical, languid, languorous, lukewarm, spiritless; averse, disinclined, hesitant, loath (also loth or loathe), reluctant, unwilling

Antonyms apathetic, indifferent, uneager, unenthusiastic

Synonyms acute, almighty, blistering, deep, dreadful, excruciating, explosive, exquisite, fearful, fearsome, ferocious, fierce, frightful, furious, ghastly, hard, heavy, heavy-duty, hellacious, intensive, keen, profound, terrible, vehement, vicious, violent

Related Words accentuated, aggravated, concentrated, deepened; emphasized, enhanced, heightened, intensified, magnified; stressed; exhaustive, thorough; harsh, rigorous, severe

Near Antonyms feeble, weak; shallow, superficial; moderated, qualified; alleviated, eased, lightened, toned (down); abated, decreased, diminished, lessened, reduced, subdued

Antonyms light, moderate, soft