ruthless

Main Entry:
ruthless [rooth-lis]
Part of Speech: adjective
Definition: mean, heartless
Synonyms: adamant, barbarous, brutal, callous, cold, cold-blooded, cruel, cutthroat, dog-eat-dog, feral, ferocious, fierce, grim, hard, hard-hearted, harsh, implacable, inexorable, inhuman, ironfisted, killer, malevolent, merciless, mortal, obdurate, pitiless, rancorous, relentless, remorseless, revengeful, sadistic, savage, severe, stern, stony, surly, unappeasable, unfeeling, unforgiving, unmerciful, unrelenting, unsympathetic, unyielding, vicious, vindictive, without pity
Antonyms: compassionate, considerate, gentle, giving, kind, nice, sympathetic
Main Entry: barbarous
Part of Speech: adjective
Definition: crude, savage
Synonyms: atrocious, barbarian, barbaric, brutal, brutish, coarse, cruel, ferocious, heartless, ignorant, inhuman, inhumane, monstrous, primitive, rough, rude, ruthless, sadistic, truculent, uncivil, uncivilized, uncouth, uncultured, unsophisticated, vicious, vulgar, wicked, wild, wolfish
Notes: barbaric pertains to crudeness and uncivility (based on Greek barbaros 'foreign'); barbarous pertains to cruelty, harshness, and immorality
Antonyms: civilized, cultured, educated, kind, nice, polite, refined, sophisticated
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: 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: 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: crooked
Part of Speech: adjective
Definition: evil, corrupt
Synonyms: crafty, criminal, deceitful, devious, dishonest, dishonorable, double-dealing, dubious, fraudulent, illegal, indirect, iniquitous, lying, nefarious, questionable, ruthless, shady, shifty, suborned, treacherous, underhand, unlawful, unprincipled, unscrupulous, untruthful
Antonyms: good, honest, law-abiding, lawful, moral
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: deadly
Part of Speech: adjective
Definition: causing end of life
Synonyms: baleful, baneful, bloodthirsty, bloody, cannibalistic, carcinogenic, cruel, dangerous, death-dealing, deathly, deleterious, destroying, destructive, fatal, grim, harmful, homicidal, injurious, internecine, killing, lethal, malignant, mortal, mortiferous, murderous, noxious, pernicious, pestiferous, pestilent, pestilential, poisonous, ruthless, savage, slaying, suicidal, toxic, unrelenting, venomous, violent, virulent
Notes: deadly means causing or capable of causing death while deathly means having the physical appearance of death
Antonyms: animating, energizing, harmless, healthful, healthy, invigorating, wholesome
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