1.  coldness(n = noun.cognition) cold - the sensation produced by low temperatures; "he shivered from the cold"; "the cold helped clear his head"
Derived form adjective cold₁

2.  coldness(n = noun.attribute) chilliness, coolness, frigidity, frigidness, iciness - a lack of affection or enthusiasm; "a distressing coldness of tone and manner"
Derived form adjective cold₂, adjective cold₁₀, adjective cold₈

3.  coldness(n = noun.attribute) cold, frigidity, frigidness, low temperature - the absence of heat; "cold is a vasoconstrictor"; "come in out of the cold"; "the coldness made our breath visible"
Antonym: hotness

   The state or quality of being cold. [1913 Webster]

N  insensibility, insensibleness, moral insensibility, inertness, inertia, vis inertiae, impassibility, impassibleness, inappetency, apathy, phlegm, dullness, hebetude, supineness, lukewarmness, cold fit, cold blood, cold heart, coldness, coolness, frigidity, sang froid, stoicism, imperturbation, nonchalance, unconcern, dry eyes, insouciance, recklessness, callousness, heart of stone, stock and stone, marble, deadness, torpor, torpidity, obstupefaction, lethargy, coma, trance, vegetative state, sleep, suspended animation, stupor, stupefaction, paralysis, palsy, numbness, neutrality, quietism, vegetation, insensible, unconscious, impassive, impassible, blind to, deaf to, dead to, unsusceptible, insusceptible, unimpressionable, unimpressible, passionless, spiritless, heartless, soulless, unfeeling, unmoral, apathetic, leuco-, phlegmatic, dull, frigid, cold blooded, cold hearted, cold as charity, flat, maudlin, obtuse, inert, supine, sluggish, torpid, torpedinous, torporific, sleepy, languid, half-hearted, tame, numbed, comatose, anaesthetic, stupefied, chloroformed, drugged, stoned, palsy-stricken, indifferent, lukewarm, careless, mindless, regardless, inattentive, neglectful, disregarding, unconcerned, nonchalant, pococurante, insouciant, sans souci, unambitious, unaffected, unruffled, unimpressed, uninspired, unexcited, unmoved, unstirred, untouched, unshocked, unstruck, unblushing, unanimated, vegetative, callous, thick-skinned, hard-nosed, pachydermatous, impervious, hardened, inured, casehardened, steeled against, proof against, imperturbable, unfelt, insensibly, aequo animo, without being moved, without being touched, without being impressed, in cold blood, with dry eyes, with withers unwrung, never mind, macht nichts, it is of no consequence, it cannot be helped, nothing coming amiss, it is all the same to, it is all one to.

N  indifference, neutrality, coldness, anaphrodisia, unconcern, insouciance, nonchalance, want of interest, want of earnestness, anorexy, anorexia, inappetency, apathy, supineness, disdain, recklessness, inattention, anaphrodisiac, antaphrodisiac, lust-quencher, passion-queller, indifferent, cold, frigid, lukewarm, cool, cool as a cucumber, unconcerned, insouciant, phlegmatic, pococurante, easygoing, devil-may- care, careless, listless, lackadaisical, half-hearted, unambitious, unaspiring, undesirous, unsolicitous, unattracted, aloof, unapproachable, remote, uncaring, unattractive, unalluring, undesired, undesirable, uncared for, unwished, unvalued, all one to, insipid, vain, for aught one cares, Int, never mind, Who cares? whatever you like, whatever, I couldn't care less, I could care less, anything will do, es macht nichts.

N  cold, coldness, frigidity, inclemency, fresco, winter, depth of winter, hard winter, Siberia, Nova Zembla, wind- chill factor, ice, snow, snowflake, snow crystal, snow drift, sleet, hail, hailstone, rime, frost, hoar frost, white frost, hard frost, sharp frost, barf, glaze, lolly, icicle, thick-ribbed ice, fall of snow, heavy fall, iceberg, icefloe, floe berg, glacier, nev_ee, serac, pruina, freezing mixture, dry ice, liquid nitrogen, liquid helium, chilliness, chill, shivering, goose skin, horripilation, rigor, chattering of teeth, numbness, frostbite, cold, cool, chill, chilly, icy, gelid, frigid, algid, fresh, keen, bleak, raw, inclement, bitter, biting, niveous, cutting, nipping, piercing, pinching, clay-cold, starved, chilled to the bone, shivering, aguish, transi de froid, frostbitten, frost-bound, frost-nipped, cold as a stone, cold as marble, cold as lead, cold as iron, cold as a frog, cold as charity, cold as Christmas, cool as a cucumber, cool as custard, icy, glacial, frosty, freezing, pruinose, wintry, brumal, hibernal, boreal, arctic, Siberian, hyemal, hyperborean, hyperboreal, icebound, frozen out, unwarmed, unthawed, lukewarm, tepid, isocheimal, isocheimenal, isocheimic, frozen, numb, frost-bitten, coldly, bitterly, pierre fendre.