cool

1 having or showing a lack of friendliness or interest in others the locals were cool towards outsiders the schoolmaster's cool manner did not encourage chitchat Synonyms aloof, antisocial, asocial, buttoned-up, cold, cold-eyed, detached, distant, dry, frosty, offish, remote, standoff, standoffish, unbending, unclubbable, unsociable Related Words indrawn, introverted, nongregarious, recessive, reclusive, reserved, unsocial, withdrawn; misanthropic; apathetic, hard, indifferent, unconcerned; clinical, dispassionate, impersonal, professional; disinterested, incurious, uninterested; reticent, silent, taciturn, uncommunicative; diffident, shy, timid; cliquey, cliquish, clubbish Near Antonyms boon, clubbable (also clubable), clubby, companionable, convivial, extroverted (also extraverted), gregarious, outgoing; communicative, expansive, garrulous, talkative; affable, folksy, genial, gracious, hospitable; agreeable, amiable, congenial, kindly, neighborly Antonyms cordial, friendly, sociable, social, warm

2 free from emotional or mental agitation in a crisis keep a cool head, even if no one else is Synonyms collected, composed, calm, coolheaded, equal, level, limpid, peaceful, placid, possessed, recollected, sedate, self-composed, self-possessed, serene, smooth, together, tranquil, undisturbed, unperturbed, unruffled, unshaken, untroubled, unworriedRelated Words even, even-keeled, steady, well-adjusted, well-balanced; imperturbable, nerveless, unflappable, unshakable; centered, disciplined, equable, self-contained, self-controlled; affable, breezy, devil-may-care, easygoing, happy-go-lucky, laid-back, loosey-goosey, mellow; carefree, nonchalant, unconcerned; assured, confident, self-assured; aloof, detached, dispassionate, indifferent; bovine, impassive, phlegmatic, sober, stolid; relaxed, relieved, tranquilized (also tranquillized)Near Antonyms anxious, bothered, distressed, uneasy, unquiet, unsettled, worried; jittery, jumpy, nervous, restless, skittish, tense; high-strung, unstable, uptightAntonyms agitated, discomposed, disturbed, flustered, perturbed, unglued, unhinged, unstrung, upset

3 having a low or subnormal temperature a cool basement that would be perfect for storing wine Synonyms algid, arctic, bitter, bone-chilling, chill, chilly, coldish, cold, coolish, freezing, frigid, frosty, gelid, glacial, ice-cold, icy, nipping, nippy, numbing, polar, shivery, snappy, wintry (also wintery)Related Words cryogenic, subfreezing, subzero, ultracold; cutting, keen, penetrating, piercing, sharp; bracing, brisk, crisp, invigorating, rigorous; chilled, cooled, frosted, frozen, iced, refrigerated, unheatedNear Antonyms lukewarm, tepid; heated, overheated, reheated, warmed; snug, toasty, warm; feverish, flushed, inflamed (also enflamed); canicular, equatorial, muggy, steamy, summery, tropicalAntonyms ardent, blazing, boiling, broiling, burning, fervent, fervid, fiery, glowing, hot, igneous, molten, piping hot, red-hot, roasting, scalding, scorching, searing, seething, sizzling, sultry, sweltering, torrid, ultrahot, warming, white-hot

4 lacking in friendliness or warmth of feeling directed a cool glance at the student who was sneaking into class late Synonyms antiseptic, arctic, brittle, chill, chilly, clammy, cold-blooded, cold-eyed, coldish, cold, frigid, frosty, frozen, gelid, glacial, hard-eyed, icy, unfriendly, unsympathetic, wintry (also wintery)Related Words bloodless, coldhearted, hard-hearted, heartless, kindless, pitiless, uncaring, unfeeling; reserved, soulless, undemonstrative, unemotional, unresponsive; apathetic, indifferent, unenthusiastic, uninterested; aloof, detached, dispassionate, impersonal, offish, standoffish; antisocial, unsociable, unsocialNear Antonyms compassionate, kind, kindhearted; demonstrative, emotional, expressive; eager, enthusiastic, passionateAntonyms cordial, friendly, genial, happy, hearty, sympathetic, warm, warm-blooded, warmhearted

5 slang  being in the latest or current fashion the outfit you're wearing is so not cool on this campus Synonyms à la mode (also a la mode), au courant, chic, stylish [slang], exclusive, fashionable, fresh [slang], happening, hip, in, modish, sharp, smart, snappy, supercool, swell, swish, trendy, voguishRelated Words downtown, edgy, funky; dapper, dashing, dressy, kicky, natty, rakish, sassy, saucy, spiffy, spruce; chichi, classy, flossy, haute (also haut), nobby, posh, ritzy, soigné (or soignée), swank (or swanky); elegant, graceful, handsome, majestic, refined, sophisticated, stately, tasteful, understated; doggish, doggy, flashy, gallant; dandyish, dudish, foppish; ultrachic, ultracool, ultrahip, ultraposh, ultrasmart, ultrasophisticatedNear Antonyms cheesy, tacky, unattractive, unbecoming; graceless, inelegant, tasteless, trashy, unhandsome; frowsy (or frowzy), sloppy, slovenly, unkempt, untidy; disheveled (or dishevelled), messy, mussy, rumpled, wrinkled; shabby, sleazyAntonyms dowdy, out, outmoded, styleless, unchic, uncool, unfashionable, unmodish, unstylish

6 slang  keenly aware of and responsive to the latest developments especially in fashion and entertainment a Greek island that's the current favorite of the cool crowd Synonyms au courant [slang], def [slang], downtown, groovy, hep, hip, in, mod, now, trendy, turned-on, with-itRelated Words à la mode (also a la mode), chic, fashionable, modish, sharp, smart, snappy, stylish, voguishNear Antonyms geeky, nerdish, nerdy; dowdy, styleless, unfashionable, unstylishAntonyms out, uncool, unhip, untrendy

7 slang  of the very best kind a really cool garage band that's starting to get some attention from the music industry 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, excellent [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], wonderfulRelated 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, traditionalNear Antonyms bad, inferior, low-grade, substandard, unsatisfactory; mediocre, middling, second-class, second-rateAntonyms atrocious, awful, execrable, lousy, pathetic, poor, rotten, terrible, vile, wretched

1 the absence of emotional involvement the judge's customary cool stood him in good stead during the sensational trial Synonyms coldness, detachment, dispassion, dispassionateness Related Words equitability, equitableness, fairness; disinterest, disinterestedness, impartiality, nonpartisanship, objectivity, unbiasedness; balance, rationality, rationalness, reasonability, reasonableness; calm, calmness, peace, peacefulness, placidity, quiet, quietness, quietude, repose, restfulness, sereneness, serenity, tranquillity (or tranquility), tranquilness; reserve, undemonstrativeness, unresponsiveness; apathy, indifference Near Antonyms emotionalism; bias, favor, one-sidedness, partiality, partisanship, prejudice

2 the quality or state of being fashionable I envy you your cool Synonyms coolness, fashionableness, hip, hipness, hipsterism, modishness, stylishness, trendiness, voguishness Related Words chic, chicness, dapperness, elegance, poshness, smartness, style, swank, swankiness; class, grace, gracefulness, majesty, stateliness; artfulness, polish, sophistication, taste, tastefulness Near Antonyms flashiness, garishness, gaudiness, gracelessness, grotesqueness, tackiness, tastelessness, tawdriness Antonyms unfashionableness

3 evenness of emotions or temper despite the flood of insults, the fledgling stand-up comic never lost his cool Synonyms aplomb, calmness, collectedness, composedness, composure, equanimity, coolness, countenance, equilibrium, imperturbability, placidity, repose, sangfroid, self-composedness, self-possession, serenity, tranquillity (or tranquility), tranquilnessRelated Words assurance, confidence, poise, self-assurance, self-assuredness, self-confidence, self-trust; easygoingness, laid-backness; apathy, detachment, impassivity, indifference, insensibility, numbness, phlegm, unconcernNear Antonyms alarm (also alarum), anxiety, anxiousness, apprehension, apprehensiveness, care, concern, disquiet, solicitude, uneasiness, worry; excitability, excitableness, nervousness; disturbanceAntonyms agitation, discomposure, perturbation

1 to cause to lose heat cool your drinks in the icy mountain stream Synonyms chill, refrigerate Related Words air-condition; freeze, frost, ice, quick-freeze, supercool; ventilate Near Antonyms bake, boil, broil, steam; heat-treat, temper; microwave Antonyms heat, toast, warm

2 to become still and orderly after the recess, tempers had cooled, and we could have a civil, rational discussion Synonyms calm (down), chill out [slang], quiet, hush, pipe down, settle (down)Related Words dry up; relax, tranquilize (also tranquillize), unwind, zone outNear Antonyms clown (around), fool around, horse around, monkey (around), show off, skylarkAntonyms act up, carry on, cut up