Bloodthirstiness is a term used to describe someone who has a thirst for blood or violence. There are various synonyms for bloodthirstiness, including savagery, ferocity, brutality, aggression, ruthlessness, and cruelty. These words are often used to describe violent and aggressive behavior or tendencies in people or animals. Being excessively bloodthirsty can be a negative trait that leads to harm and destruction. However, in some cases, a certain level of bloodthirstiness may be necessary for survival and protection, such as in the animal kingdom. Regardless, the synonyms for "most bloodthirstiness" all denote a level of extreme violence and hostility.