1) Brutality 2) Cruelness 3) Cruelty 4) Ferociousness 5) Harshness 6) Savageness 7) Savagery 1) Brutality 2) Cruelty 3) Ferociousness 4) Fierceness 5) Rage 6) Savageness 7) Savagery 8) Spite 9) Unkindness 10) Vice 11) Vitiosity 
viciousness 1. An action that causes harm to others; extreme cruelty. 2. A trait of extreme cruelty. 3. Given to vice, immorality, or depravity.