Morally corrupt (6)
(Other definitions for rotten that I've seen before include "Decayed or corrupt (60" , "Decaying or morally corrupt" , "Decayed or morally corrupt" , "Putrefied; punk leader" , "Corrupt; very bad" .)
'morally corrupt' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for debauch that I've seen before include "Seduce" , "Morally corrupt" .)
'morally corrupt' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for depraved that I've seen before include "Morally reprehensible" , "Licentious" , "Morally corrupt" .)