Completely wreck (5)
I believe the answer is:
total
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">completely wreck</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 total that I've seen before include "Complete, absolute" , "Aggregate amount" , "The whole, sum" , "Complete; add up" , "Everything added together" .)