MALICIOUS
Adjective.
characterized by malice; intending or intended to do harm.
“he was found guilty of malicious damage”
synonyms: spiteful, malevolent, hostile, bitter, venomous, poisonous, evil-intentioned, ill-natured, evil, baleful, vindictive, vengeful, vitriolic, rancorous, malign, malignant, pernicious, mean, nasty, harmful, hurtful, mischievous, destructive, wounding, cruel, unkind, defamatory.