Synonyms of cool

1 Syllable

cold, swell, best, quelch, hip, blasé, hep, hoar, staid, snub, rad, fab, stoic, bliss, ok, calms, chill, mild, calm, couth

2 Syllables

restrains, arctic, fined, aloof, poising, goodish, champion, kindly, algid, frore, gelid, nipping, rimy, sleety, refresh, snubbing, steadying, gentler, smother, bluechip, restrain, neutral, biting, air-cool, tepid, protract, speechless, unlax, flipper, chillier, hepper, niftier, slighted, stoical, shadier, withdrawn, lulled, weeded, world-class, wintry, far-out, steller, nifty, dandy, blase, bosky, umbrous, hippest, duelling, staving, kindlier, staider, repels, calmer, staidest, placid, lulling, stand-out, deter, dueling, frostier, milder, super, repress, dulling, duelled, stave, toothier, tabled, flippest, fanned, snappy, chilly, slaking, cold-fish, slake, raddest, stormless, windless, coldest, sweller, ripping, blissful, airing, snobbing, shadiest, gentlest, select, snubbed, worn-down, dandier, dueled, deters, trojan, finer, coldish, fanning, fining, burring, frosty, knowhow, calmed, soothed, dove-like, jet-set, pleasant, splasher, frigid, fabber, besting, chilliest, jetset, glacial, radder, prevent, burred, chilled, tranquil, staved, colder, shady, fagged, jaded, with-it, smothers, skillful, sophic, poise, knowing, repel, hawkish, uppish, sniffy, chiller, bracing, turn-on, slaked, a-ok, mildest, well-done, calmest, hipper, shaded, toothy, chilling, offhand

3 Syllables

preventing, reserved, antarctic, careful, unpitying, unfussy, coolheaded, manacling, unsocial, abated, garotte, percipient, siberian, shivery, elite, ecstasies, disdainful, docile, assuaged, repressed, uncaring, ecstasy, demulcent, amiable, unfazed, creative, hundred-proof, out-of-sight, wonderful, abate, smothering, unstirred, politic, adumbral, displease, conversant, tempering, mollifying, mondaine, aware, assuage, disjointed, mollified, pacified, prideful, toplofty, up-stage, softspoken, snippety, sedate, repressing, unloving, phlegmatic, well-thought-out, restrained, refreshing, sensible, repelled, hardheaded, sagacious, prohibit, together, half-hearted, rational, serene, waveless, confine, protracting, mollifies, pacify, self-command, controlled, ungenial, bystanding, composed, tired-out, passionless, pacifying, deterred, tempered, outstanding, icicled, singular, unruffled, untroubled, collected, courageous, assuaging, world-weary, murdered, passive, arrogant, malapert, impudent, overbold, standoffish, mollify, informal, iceberg, carefree, free-minded, patience, abating, incurious, majestic, wiseguy, nonchalant, halfhearted, astucious, cold-shoulder, tuned-in, biggety, contemptuous, well-versed, good-tasting, home-cooking, refreshed, umbrageous, rapture, elysium, represses, throwaway, fabulous

4 Syllables

equilibriums, prohibiting, hyperboreal, impressive, low-pressure, free-and-easy, level-headed, good-tempered, ataraxy, air-condition, serenity, objective, distinctive, insociable, noncombatant, mitigating, lenitive, self-respecting, indifferent, out-of-this-world, ultamodern, unflustered, disadvise, chiaroscuro, temperate, impersonal, power-loving, admirable, acceptable, unsociable, unwelcoming, collectedness, well-adjusted, well-reasoned, emotionless, deductive, noteworthy, equanimous, reconciling, perfunctory, composure, unexcited, reposeful, prize-winning, accomplished, atoneness, sedulity, moderated, non-combatant, dismissive, middle-of-road, unimpressed, unbothered, unaroused, unlively, equilibrium, hunky-dory, at-oneness, palatable, levelheaded, self-possessed, nonresistant, confidence, nonaligned, self-controlled, self-restrained, smart-alecky, aversive, disentranced, introverted, apathetic, unconcerned, moderate, uninvolved, moderating, mitigated, unpassioned, saporific, sugar-coated, unaffable, endurance, mitigate

5 Syllables

procrastinated, even-tempered, unexcitable, considerate, nonemotional, refrigerate, unperturbable, unagitated, perseverance, reinvigorated, longanimity, unreceptive, inhospitable, levelheadedness, unenthusiastic, unemotional, unimpressible, unsympathetic, revitalized, procrastinate, equanimities, self-composure, nonbelligerent, opportunistic, air-conditioned, refrigerated, pacificate, unapproachable, disimpassioned, dispassionate, imperturbable, reinvigorate, satisfactory, unresponsive, happy-go-lucky, refrigerating, unprepossessed, revitalize, sophisticated, forebearance, equanimity, delicatesse, unexpansive, procrastinating, nonresistance, revitalizing

6 Syllables

immovability, uncompassionate, stick-to-itiveness, nonparticipating, uncompanionable, unobjectionable

7 Syllables

inexcitability

8 Syllables

indefatigability