| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | wild, untamed |
| Synonyms: | aboriginal, ancient, archaic, barbarian, barbaric, bestial, brutal, brute, crude, earliest, feral, ferocious, fierce, first, fundamental, harsh, in a state of nature, lupine, native, natural, nonliterate, original, primary, primeval, primitive, primordial, pristine, rough, rude, rugged, rustic, simple, turbulent, unbroken, uncivilized, uncultivated, uncultured, undomesticated, unmodified, unrestrained, unspoiled, vicious |
| Antonyms: | calm, civilized, domesticated, tame |
| Main Entry: | bitter |
| Part of Speech: | adjective |
| Definition: | painful, distressing |
| Synonyms: | afflictive, annoying, bad, brutal, calamitous, cruel, dire, disagreeable, displeasing, distasteful, disturbing, galling, grievous, hard, harsh, heartbreaking, hurtful, inclement, intemperate, intense, merciless, offensive, poignant, provoking, rigorous, rugged, ruthless, savage, severe, sharp, stinging, unpalatable, unpleasant, vexatious, woeful |
| Antonyms: | good, helping, wonderful |
| Main Entry: | bloodthirsty |
| Part of Speech: | adjective |
| Definition: | murderous |
| Synonyms: | barbaric, cruel, homicidal, inhuman, ruthless, sanguinary, savage, slaughterous |
| Main Entry: | bloody |
| Part of Speech: | adjective |
| Definition: | hard-fought |
| Synonyms: | bloodthirsty, cruel, cutthroat, decimating, ferocious, fierce, gory, grim, heavy, homicidal, murderous, sanguinary, sanguine, savage, slaughterous |
| 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: | brute |
| Part of Speech: | noun |
| Definition: | barbarian |
| Synonyms: | animal, beast, cannibal, creature, critter, degenerate, devil, fiend, lout, monster, ogre, ruffian, sadist, savage, swine, wild animal |
| Antonyms: | gentleman, humanitarian |
| Main Entry: | cannibal |
| Part of Speech: | noun |
| Definition: | beast, beastlike human |
| Synonyms: | aborigine, anthropophaginian, anthropophagite, anthropophagus, brute, bush dweller, cruel person, head-hunter, ogre, ogress, primitive, ruffian, savage |
| 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 |