Salacious stuff (4)
I believe the answer is:
smut
'salacious stuff' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for smut that I've seen before include "Flake of soot or dirt" , "Small soot flake or indecent talk" , "blue material" , "Dirty jokes - black mark" , "Dirt or immoral talk" .)