| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | hard-hearted, numb |
| Synonyms: | anesthetized, apathetic, asleep, benumbed, brutal, callous, cantankerous, churlish, cold, cold fish, cold-blooded, cold-hearted, crotchety, cruel, deadened, exacting, feelingless, hard, hardened, heartless, icy, inanimate, inhuman, insensate, insensible, insensitive, iron-hearted, merciless, obdurate, pitiless, ruthless, sensationless, senseless, severe, stony, surly, thick-skinned, tough, unamiable, uncaring, uncompassionate, uncordial, unemotional, unkind, unsympathetic |
| Antonyms: | caring, concerned, feeling, loving, sensitive |
| Main Entry: | austere |
| Part of Speech: | adjective |
| Definition: | severe in manner |
| Synonyms: | ascetic, astringent, cold, earnest, exacting, forbidding, formal, grave, grim, hard, harsh, inexorable, inflexible, obdurate, rigid, rigorous, serious, sober, solemn, somber, stern, stiff, strict, stringent, unfeeling, unrelenting |
| Antonyms: | bland, calm, gentle, meek, mild |
| Main Entry: | brutal |
| Part of Speech: | adjective |
| Definition: | cruel, remorseless |
| Synonyms: | barbarous, bloodthirsty, callous, ferocious, gruff, hard, harsh, heartless, impolite, inhuman, insensitive, merciless, pitiless, remorseless, rough, rude, ruthless, savage, severe, uncivil, uncivilized, unfeeling, unmannerly, unmerciful, vicious |
| Antonyms: | generous, humane, kind, nice |
| Main Entry: | brutal |
| Part of Speech: | adjective |
| Definition: | crude, rough |
| Synonyms: | animal, bearish, beastly, bestial, brute, brutish, carnal, coarse, feral, ferine, inhuman, inhumane, rude, savage, swinish, unfeeling |
| Antonyms: | gentle, kind, nice |
| Main Entry: | callous |
| Part of Speech: | adjective |
| Definition: | cruel, insensitive |
| Synonyms: | apathetic, blind to, careless, case-hardened, cold, cold-blooded, deaf to, hard, hard-bitten, hard-boiled, hardened, hardhearted, heartless, impassive, impenitent, indifferent, indurated, inflexible, insensate, insensible, insensitive, insentient, inured, obdurate, soulless, spiritless, stiff, stony, stubborn, thick-skinned, torpid, tough, toughened, unaffected, unbending, uncaring, uncompassionate, unconcerned, unfeeling, unimpressionable, unresponsive, unsusceptible, unsympathetic |
| Notes: | callus is a hard patch of skin; callous is an adjective meaning 'indifferent to suffering' or 'hardened' |
| Antonyms: | compassionate, feeling, kind, nice, sensitive, sympathetic, tender |
| Main Entry: | cold |
| Part of Speech: | adjective |
| Definition: | aloof, unresponsive |
| Synonyms: | apathetic, cold-blooded, cool, dead, distant, emotionless, frigid, frosty, glacial, icy, impersonal, imperturbable, indifferent, inhibited, inhospitable, joyless, lukewarm, matter-of-fact, passionless, phlegmatic, reserved, reticent, spiritless, standoffish, stony, unconcerned, undemonstrative, unenthusiastic, unfeeling, unimpassioned, unmoved, unresponsive, unsympathetic |
| Antonyms: | animated, ardent, eager, enthusiastic, excited, fervid, friendly, interested, sympathetic, warm, zealous |
| Main Entry: | cold-blooded |
| Part of Speech: | adjective |
| Definition: | cruel, heartless |
| Synonyms: | barbarous, brutal, callous, cold, dispassionate, hard-boiled, hard-hearted, hardened, imperturbable, inhuman, matter-of-fact, merciless, obdurate, pitiless, relentless, ruthless, savage, steely, stony-hearted, uncompassionate, unemotional, unfeeling, unmoved |
| Notes: | cold-blooded (poikilothermic, poikilothermal) is used for creatures whose blood takes on the temperature of their environment; warm-blooded (homoiothermic, homeothermal) is having a fairly steady body temperature governed by the thermotaxic nerve mechanism |
| Antonyms: | compassionate, demonstrative, feeling, friendly, merciful, nice, sympathetic, warm-blooded |
| Main Entry: | cruel |
| Part of Speech: | adjective |
| Definition: | vicious, pitiless; causing pain |
| Synonyms: | atrocious, barbarous, bestial, bitter, bloodthirsty, brutal, brutish, callous, cold-blooded, degenerate, demoniac, depraved, evil, excruciating, ferocious, fierce, flinty, hard, hard-hearted, harsh, hateful, heartless, hellish, implacable, inexorable, inhuman, inhumane, malevolent, merciless, monstrous, painful, pernicious, poignant, rancorous, relentless, revengeful, ruthless, sadistic, sinful, spiteful, tyrannical, unfeeling, unkind, unnatural, unrelenting, vengeful, vicious, virulent, wicked |
| Antonyms: | charitable, compassionate, considerate, feeling, gentle, kind, merciful, sympathetic, thoughtful, uncruel |
| Main Entry: | dead |
| Part of Speech: | adjective |
| Definition: | indifferent, cold |
| Synonyms: | anesthetized, apathetic, asleep, boring, callous, deadened, dull, flat, frigid, glazed, inert, insensitive, insipid, lukewarm, numb, numbed, paralyzed, senseless, spiritless, stagnant, stale, still, tasteless, torpid, unfeeling, uninteresting, unresponsive, vapid, wooden |
| Antonyms: | active, animated, interested, live, living, responsive, spirited, warm |