Antonyms for hot:
freezing, old, rimy, nonradioactive, retrograde, far, cool, unheated, arctic, old fashioned, frigid, cold, stone-cold, slow, refrigerating, unwanted, refrigerant, unlucky, raw, shivery, legal, unsexy, wintry, uneager, inactive, snappy, unwarmed, refrigerated, tasteless, retro, uncharged, unskilled, unpopular, rimed.
Synonyms for hot:
gelid, emotionless, coldness, nippy, Gelidness, Febrific, coolness, luckily, swelter, fantasize, hotness, offish, fortuitous, steaming, libido, frore, arousal, boreal, Frigidness, lottery, dumb luck, bask, groovy, pepper, beat down, frostiness, gelidity, luck, wintriness, suffocating, warmly, fortune, beginner's luck, combust, pot luck, fashionable, torridity, sun-drenched, toasty, dangerous, fortunate, fevered, steamy, acclaimed, noncompetitive, bedroom eyes, excitation, smolder, day, pyretic, nifty, sex drive, providential, fortunately, well-received, hypercompetitive, chilliness, ripping, heavy breathing, lust, miraculous, sex maniac, Torridness, iciness, charmed.
Other synonyms and related words:
bully, passionate, pyretic, blistering, grand, inflamed, febrile, hotness, boiling, excited, live, afire, fervid, swell, ripping, fervent, flaming, dandy, piquant, nifty, radioactive, hectic, fire, lustful, keen, pungent, peppery, heat, great, heated, peachy, ardent, fevered, intense, spicy, het up, ablaze, sultry, charged.
passionate, vehement (adjective)
sexually excited (adjective)
spicy to taste (adjective)
very high in temperature (adjective)
fiery, febrile, boiling, warm, fevered, steaming, sweltry, flaming, tropic, broiling, humid, scalding, close, sultry, igneous, blistering, sweltering, heated, tropical, baking, feverish, burning, scorching, roasting, sizzling, blazing, Searing, white, torrid.
Sense 4 (noun)
Sense 5 (noun)
Sense 9 (noun)
Sense 10 (noun)
Sense 12 (noun)
Sense 15 (noun)
heatable, calefacient, calefactory, wanted, fiery, close, flaming, heated, warm, calorific, het up, burning, live, raging, sizzling, popular, peppery, white-hot, blistery, overheated, lucky, sweltering, baking, white, unpleasant, calorifacient, scorching, sulfurous, tropic, illegal, spicy, boiling, active, stifling, gingery, heating, sulphurous, blistering, calefactive, thermal, scalding, hottish, het, sensual, new, fast, fervent, sweltry, violent, fervid, charged, pungent, eager, skilled, good, igneous, fresh, baking hot, sultry, torrid, red hot, near, tropical, warming, radioactive, heated up.
sexually attractive (noun)
seductive, Slinky, attractive.