Vendetta (4)
I believe the answer is:
feud
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">vendetta</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for feud that I've seen before include "Bitter disagreement between families" , "Persistent strife" , "Prolonged fight between families, very Sicilian" , "Vendetta" , "Prolonged dispute" .)