Synonyms and related words :
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,