glacial

1 having a low or subnormal temperature a glacial weather front coming down from Canada will bring freezing temperatures this weekend Synonyms algid, arctic, bitter, bone-chilling, chill, chilly, coldish, cool, coolish, freezing, frigid, frosty, gelid, cold, 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

2 lacking in friendliness or warmth of feeling her glacial manner discouraged him from attempting further conversation Synonyms antiseptic, arctic, brittle, chill, chilly, clammy, cold-blooded, cold-eyed, coldish, cool, frigid, frosty, frozen, gelid, cold, 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