Make numb (6)
I believe the answer is:
deaden
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">make numb</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for deaden that I've seen before include "Make weaker or quieter" , "Take life" , "Make numb, deprive of feeling" , "Muffle impact" , "Muffle, deprive of feeling" .)