Make rough (7)
I believe the answer is:
coarsen
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">make rough</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 coarsen that I've seen before include "Turn rough" , "Dull" , "Make rough or crude" , "Make more harsh" , "become inferior" .)