Slightly indecent (6)
I believe the answer is:
risque
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">slightly indecent</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 risque that I've seen before include "Suggestive - naughty" , "Squire (anag.)" , "Mildly indecent" , "Blue" , "Slightly indecent in France?" .)