[adj] marked by deep ill will; deliberately harmful; "a malevolent lie"; "poisonous hate...in his eyes"- Ernest Hemingway; "venomous criticism"; "vicious gossip"
[adj] (of persons or their actions) able or disposed to inflict pain or suffering; "a barbarous crime"; "brutal beatings"; "cruel tortures"; "Stalin's roughshod treatment of the kulaks"; "a savage slap"; "vicious kicks"
[adj] having the nature of vice
Synonyms
barbarous, brutal, cruel, depraved, evil, fell, inhumane, malevolent, malicious, poisonous, roughshod, savage, venomous, wicked