Classy bloke (4)
I believe the answer is:
gent
'classy bloke' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for gent that I've seen before include "Man of good standing (informal)" , "Refined man (colloquial)" , "Honourable man" , "Auctioneer's tool" , "Toff" .)