ferocity (n.)

• aggression
• aggressiveness
• animality
• antagonism
• atrociousness
• barbarity
• barbarousness
• beastliness
• bellicosity
• belligerence
• belligerency
• bestiality
• bloodiness
• bloodlust
• bloodthirstiness
• brutality
• cannibalism
• chauvinism
• combativeness
• contentiousness
• cruelness
• cruelty
• ferociousness
• fierceness
• fight
• hostility
• inhumaneness
• inhumanity
• jingoism
• militancy
• militarism
• pugnacity
• quarrelsomeness
• ruthlessness
• sadism
• savagery
• truculence
• unfriendliness
• vandalism
• viciousness
• violence
• warmongering
• warpath