abiotic, affectless, analgesia, anesthesia, anesthetized, arctic, asleep, autistic, azoic, benumbed, blunt, bowelless, brutal, callosity, callous, calloused, callousness, cantankerous, catatonic, chill, chilly, churlish, cold, cold as charity, cold of heart, cold-blooded, coldblooded, coldbloodedness, coldhearted, coldheartedness, coldness, cool, crotchety, cruel, dead, deadened, deadness, dispassionate, dog-eat-dog, drugged, dull, dullness, dumb, electronarcosis, emotionally dead, emotionless, exacting, exanimate, flinthearted, flinty, frigid, frosted, frosty, frozen, hard, hard of heart, hard-boiled, hardened, hardhearted, hardheartedness, hardness, hardness of heart, harsh, heart of stone, heartless, heartlessness, icy, immovable, impassibility, impassible, impassive, imperception, imperceptive, imperceptiveness, imperceptivity, impercipience, impercipient, inanimate, inanimated, inclement, inconsiderateness, indurated, inert, inexcitable, inexorable, insensate, insensibility, insensible, insensibleness, insensitive, insensitiveness, insensitivity, insentience, insentient, insusceptible, ironhearted, lifeless, marblehearted, merciless, mute, narcosis, narcotization, nonconscious, nonemotional, nonliving, numb, numbed, numbness, obduracy, obdurate, objective, obtuse, obtuseness, out of touch, passionless, pins and needles, pitiless, pitilessness, relentless, remorseless, ruthless, self-absorbed, senseless, severe, soulless, spiritless, stony, stonyhearted, surly, thick skin, thick-skinned, thick-witted, tough, unaffectionate, unamiable, unanimated, uncompassionate, uncompassioned, unconscious, uncordial, unemotional, unfeelingness, unfelt, unforgiving, unimpassioned, unimpressionable, unkind, unloving, unmerciful, unmercifulness, unnatural, unnaturalness, unpassionate, unperceptive, unperceptiveness, unpitiful, unpitying, unremorseful, unresponding, unresponsive, unresponsiveness, unsusceptible, unsympathetic, unsympathizing, untouchable, unyielding, without mercy