Rakishly disreputable (6)
I believe the answer is:
louche
'rakishly disreputable' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for louche that I've seen before include "Ignominious" , "Disreputable in a rakish sort of way" , "Rakishly disreputable" , "Of questionable taste or morality" , "Seedy" .)