Scandal subject (3)
I believe the answer is:
sex
'scandal subject' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sex that I've seen before include "Male or female" , "This symbol is epitome of glamour" , "VI (Lat.); m. or f." , "Hanky-panky" , "Expert in the treatment of coital problems" .)