Synonyms of malevolent

1 Syllable
tough, cruel, rough
2 Syllables
crueler, spleenful, sullen, ruthless, fiercest, cruelest, evil, lousy, unkind, vicious, fiercer, catty, chthonian, malign, bitchy, maligns, waspish, dirty, wicked, bitchier, cattier, poison, hellish, murder, cattish
3 Syllables
pernicious, outrageous, baleful, viperous, infernal, malefic, murderous, hostile, viperish, malicious, blackhearted, venomous, ungodly, dissentious, spiteful, resentful, scoundrelly, opprobrious, ferine, rancorous, sinister, miasmatic, vengeful, sulphurous, hateful, malignant, libelous, maligning
4 Syllables
incendiary, misanthropic, ill-natured, evil-minded, eremitic, rabble-rousing, aspersive, maleficent, mythomaniac, demagogic, incendiaries, tempersome, bad-natured, despiteful, vindictive, anti-social
5 Syllables
misanthropical, derogatory, calumniatory