List of vicious synonyms and vicious related words.
Draconian, Tartarean, abominable, acrimonious, amoral, animal, anthropophagous, arrant, atrocious, bad, baleful, baneful, barbaric, barbarous, base, beastly, bestial, bitchy, bitter, black, blamable, blameworthy, bloodthirsty, bloody, bloody-minded, brutal, brutalized, brute, brutish, cannibalistic, concentrated, contaminated, corroding, corrosive, corrupt, corrupting, corruptive, counterproductive, criminal, cruel, cruel-hearted, damaging, damnable, dark, deadly, defamatory, degenerate, degraded, degrading, deleterious, demoniac, demoniacal, depraved, desperate, despiteful, detrimental, devilish, diabolic, diabolical, disadvantageous, disgraceful, disserviceable, distressing, evil, execrable, exquisite, faulty, fearful, fell, feral, ferine, ferocious, fiendish, fiendlike, fierce, flagitious, flagrant, foul, furious, harmful, hateful, heinous, hellish, hurtful, ill, immoral, improper, inaccurate, inauspicious, inexpedient, infamous, inferior, infernal, inhuman, inhumane, iniquitous, injurious, invalid, kill-crazy, knavish, lethal, low, malefic, malevolent, malicious, malign, malignant, mean, merciless, mischievous, miscreant, monstrous, murderous, nasty, naughty, nefarious, noisome, noncivilized, nonmoral, noxious, obnoxious, odious, ominous, opprobrious, peccant, pernicious, perverse, perverted, pitiless, poisonous, poor, prejudicial, profligate, putrid, rancorous, rank, ravening, reprehensible, reprobate, rotten, ruthless, sadistic, sanguinary, sanguineous, satanic, savage, scandalous, scatheful, septic, severe, shameful, shameless, sharkish, sinful, sinister, slanderous, slavering, spiteful, steeped in vice, subhuman, tameless, terrible, toxic, truculent, unchristian, uncivilized, unfavorable, unforgivable, ungentle, unhealthy, unhuman, unkind, unmoral, unpardonable, unpleasant, unprincipled, unskillful, unsound, unspeakable, untamed, untoward, unworthy, vehement, venal, venenate, veneniferous, venenous, venomous, vice-laden, vice-prone, vile, villainous, vindictive, violent, virulent, wicked, wild, wolfish, wrong