Incline to be a playboy? (4)
I believe the answer is:
rake
I believe this clue is a double definition.
'incline' is the first definition.
(thesaurus)
'a playboy?' is the second definition.
(old-fashioned term for a womanising man)
'to be' is the link.
(Other definitions for rake that I've seen before include "Dissipated type; garden implement" , "Playboy" , "Degenerate" , "One may see a croupier with one" , "Dissolute person" .)