Synonyms for vicious

Adjective

1. barbarous, brutal, cruel, fell, roughshod, savage, vicious, inhumane (vs. humane)

usage: (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"

2. depraved, evil, vicious, wicked (vs. virtuous)

usage: having the nature of vice

3. poisonous, venomous, vicious, malevolent (vs. benevolent), malicious

usage: marked by deep ill will; deliberately harmful; "a malevolent lie"; "poisonous hate...in his eyes"- Ernest Hemingway; "venomous criticism"; "vicious gossip"