Dissolute; dashing (6)
I believe the answer is:
rakish
I believe this is a double definition.
'dissolute' is the first definition.
(I've seen this in another clue)
'dashing' is the second definition.
(I know that dashing can be written as rakish)
(Other definitions for rakish that I've seen before include "Jaunty; fast-looking (boat)" , "Dashing and slightly disreputable" , "Marked by unconventionality or disreputableness" , "Given to philandering" , "Profligate" .)