Unsightly fat (4)
I believe the answer is:
flab
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unsightly fat</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for flab that I've seen before include "spare tyre?" , "Excess fat (colloq.)" , "Ugly, surplus flesh" , "Unwanted body fat" , "Soft loose flesh" .)