More macabre (8)
I believe the answer is:
grislier
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">more macabre</span>' is the definition.<br/ ><span class="explanation-format__explanation">('grisly' can be a synonym of 'macabre')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for grislier that I've seen before include "More gruesome" , "More ghastly" .)