Crumbly (7)
I believe the answer is:
friable
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">crumbly</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that crumbly can be written as friable)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for friable that I've seen before include "Easily crumbled or crushed into powder" , "Easily broken down" .)