helpful (adjective) helpful: beneficial, beneficent
Sinonime: Siberian, algid, arctic, below freezing, below zero, benumbed, biting,
bitter, blasting, bleak, boreal, brisk, brumal, chill, chilled, cool, crisp,
cutting, frigid, frore, frosty, frozen, gelid, glacial, have goose bumps, hawkish, hiemal, hyperborean, icebox, iced, icy, inclement,
intense,
keen, nipping, nippy, numbed, numbing, one-dog night, penetrating,
piercing, polar,
raw, rimy,
severe, sharp, shivery, sleety, snappy, snowy, stinging, two-dog night, wintry
Antonime: hot, warm