ferocity

noun

Etymology: Borrowed from Middle French férocité, from Latin ferocitas, from ferox (“fierce”), from ferus (“wild, savage, fierce”).

1. The condition of being ferocious.

   “Near-synonyms: fierceness, furiousness, fury, vehemence, violence”

   “Nearly a year later, in the month of October, 18—, London was startled by a crime of singular ferocity and rendered all the more notable by the high position of the victim.”