1. (n.) The attribute or quality of being cruel; a disposition to give unnecessary pain or suffering to others; inhumanity; barbarity.

2. (n.) A cruel and barbarous deed; inhuman treatment; the act of willfully causing unnecessary pain.

animality atrociousness atrocity barbarity barbarousness beastliness bestiality bloodiness bloodlust bloodthirst bloodthirstiness bloody-mindedness brutality brutalness brutishness cannibalism cruelness ferociousness ferocity fiendishness fierceness flintiness hardness harshness heartlessness inclemency inexorableness inhumaneness inhumanity mercilessness pitilessness relentlessness remorselessness ruthlessness sadism sadistic cruelty sanguineousness savagery short shrift tender mercies truculence uncompassionateness unfeelingness unforgivingness unmercifulness unremorsefulness unsympatheticness unyieldingness vandalism viciousness violence wanton cruelty