Ravage (3,5)
I believe the answer is:
lay waste
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ravage</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for lay waste that I've seen before include "Make desolate" , "wreak devastation" , "Destroy, leave in ruins" , "Raze, destroy buildings, crops etc" , "Destroy, ravage" .)