Not for the prudish (4)
I believe the answer is:
racy
'not for the prudish' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for racy that I've seen before include "Lively" , "Sexually suggestive" , "Slightly indecent" , "bawdy quality" , "Suggestive, risque" .)