Slightly indecent (6)
I believe the answer is:
risque
'slightly indecent' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for risque that I've seen before include "Suggestive - naughty" , "Squire (anag.)" , "Mildly indecent" , "Blue" , "Slightly indecent in France?" .)