Trouncing (4)
I believe the answer is:
rout
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">trouncing</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for rout that I've seen before include "Utter defeat" , "Overwhelmingly defeat" , "snore" , "Put to flight on tour" , "Drubbing" .)