Debauched (9)
I believe the answer is:
dissolute
'debauched' is the definition.
(I know that debauched can be written as dissolute)
This is the entire clue.
(Other definitions for dissolute that I've seen before include "O, lust dies when one is this loose in morals" , "Sensually overindugent" , "Old tissue (anag) - like a rake?" , "Sensually overindulgent" , "Duelist so (anag) - debauched" .)