Violence (8)
I believe the answer is:
ferocity
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">violence</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ferocity that I've seen before include "Savagery, fierceness" , "State of savagery and violence" , "Savage cruelty of temperament" , "Wild savagery" , "Unrestrained and cruel savagery" .)