Utter defeat (4)
I believe the answer is:
rout
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">utter defeat</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for rout that I've seen before include "Rowdy mob" , "Disastrous defeat" , "Defeat utterly" , "Devastating defeat" , "Decisive defeat" .)