Sly slur (8)
I believe the answer is:
innuendo
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sly slur</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 innuendo that I've seen before include "Suggestive remark" , "Indirect reference to something rude" , "Indirect remark" , "Smutty insinuation" , "Indirect or subtle reference" .)