Synonyms of coldest

1 Syllable
brisk, raw, keen, cool, iced, bleak, sharp, crisp, chill
2 Syllables
frosty, frigid, brumal, glacial, biting, chilled, hawkish, nippy, polar, arctic, algid, frore, gelid, blasting, hiemal, icy, nipping, numbed, rimy, sleety, snappy, wintry, cutting, stinging, piercing, snowy, frozen, bitter, boreal, numbing
3 Syllables
benumbed, siberian, inclement, severe, shivery, icebox, intense
4 Syllables
penetrating, hyperborean