Synonyms and related words :
Siberian, algid, arctic, astringent, austere, bad, below zero, biting, bitter, bitterly cold, bleak, blustery, boreal, bowelless, brisk, brumal, brutal, cold, cold as charity, cold as death, cold as ice, cold as marble, crisp, cruel, cutting, dog-eat-dog, dour, extreme, flinty, freezing, freezing cold, frigid, gelid, glacial, grim, hard, harsh, heartless, hibernal, hiemal, hyperborean, ice-cold, ice-encrusted, icelike, icy, inexorable, intemperate, keen, merciless, nipping, nippy, numbing, penetrating, piercing, pinching, pitiless, rainy, raw, relentless, remorseless, rigorous, rough, rugged, ruthless, severe, sharp, sleety, slushy, snappy, squally, stern, stone-cold, stormy, stringent, subzero, supercooled, tempestuous, uncompassionate, uncompassioned, unfeeling, unforgiving, ungentle, unmerciful, unpitiful, unpitying, unremorseful, unsparing, unsympathetic, unsympathizing, unyielding, violent, winterbound, winterlike, wintery, wintry, without mercy