What is the meaning of vicious?

adjective

• Of persons or their actions. ( able or disposed to inflict pain or suffering)
  • usage: "a barbarous crime"; "brutal beatings"; "cruel tortures"; "Stalin's roughshod treatment of the kulaks"; "a savage slap"; "vicious kicks"
  • synonyms: barbarous, brutal, cruel, fell, roughshod, savage
• Having the nature of vice.
  • synonyms: evil
• Bringing or deserving severe rebuke or censure.
  • usage: "a criminal waste of talent"; "a deplorable act of violence"; "adultery is as reprehensible for a husband as for a wife"
  • synonyms: condemnable, criminal, deplorable, reprehensible
• Marked by deep ill will; deliberately harmful.
  • usage: "poisonous hate"; "venomous criticism"; "vicious gossip"
  • synonyms: poisonous, venomous