malevolent

malevolent adjective acrimonious, actively opposed, adverse, aggressive, antagonistic, antipathetic, antipathetical, baleful, baneful, barbarous, bellicose, belligerent, bilious, bitter, bloodthirsty, brutal, churlish, cold, cold-blooded, cruel, damaging, deadly, deleterious, demoniac, demonial, despiteful, devilish, diabolic, diabolical, disaffected, disobliging, embittered, envenomed, evil, faithless, ferocious, feuding, fiendish, full of hate, full of malice, full of revenge, full of spite, galling, grim, grudging, hardhearted, harmful, harsh, hateful, heinous, hellish, hostile, hurtful, ill-disposed, ill-intentioned, ill-natured, ill-wishing, implacable, infamous, infernal, iniquitous, invidious, lethal, malefic, maleficent, malevolus, malign, malignant, mean, merciless, mischievous, oppugnant, perfidious, pernicious, pitiless, plotting, poisonous, rancorous, repugnant, resentful, retaliative, retaliatory, ruinous, ruthless, satanic, savage, scatheful, sinister, snaky, spiteful, spleenful, treacherous, truculent, unamicable, unfeeling, unfriendly, unkind, venomous, vicious, villainous, vindictive, viperous, virulent, vitriolic, warlike, wicked

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See also: bad, calumnious, caustic, cold-blooded, contemptuous, convict, cruel, delinquent, diabolic, hoodlum, hostile, inimical, iniquitous, libelous, malicious, malignant, offensive, outrageous, pernicious, resentful, ruthless, scathing, sinister, spiteful, vicious, vindictive, virulent