Synonyms of malicious

1 Syllable
low, mean, green, gross
2 Syllables
harmful, cussed, wreakful, bitchy, uncool, awful, cattish, fiendish, bitter, spleenful, sneakier, noxious, evil, catty, chthonian, libels, snider, libel, sullen, septic, wicked, bitchier, green-eyed, sneaky, hurtful, jealous, toucher, unkind, vicious, petty, feller, ogreish, cutting, envious, nasty, vulgar, beastly, malign, dickens, sneakiest
3 Syllables
libeled, infernal, libeling, injurious, hostile, mischievous, toxicant, venomous, rascally, spiteful, ornery, rancorous, miasmatic, libelous, coldblooded, sulphurous, virulent, malignant, pernicious, baleful, unfriendly, liverish, ferine, vengeful, inhuman, slanderous, viperish, libelled, poisonous, scoundrelly, resentful, hardnosed
4 Syllables
ill-natured, ill-behaved, deleterious, demonical, detrimental, inhumane, aspersive, ill-disposed, mephitical, tempersome, bad-natured, despiteful, vindictive, satanical, evil-minded, malevolent, traducement, mythomaniac, unneighborly
5 Syllables
vilifications, calumniatory, vilification, derogatory