Favour (6)
'favour' is the definition.
(I know that favour can be written as prefer)
This is all the clue.
(Other definitions for prefer that I've seen before include "Like one better than another" , "Choose over others" , "Favour, like better" , "Advance" , "Promote; like better" .)
'favour' is the definition.
(good turn is a kind of favour)
This is all the clue.
(Other definitions for good turn that I've seen before include "''One . . . . . . . . deserves another'' (4, 4)" , "Helpful deed" , "Something done to help" , "Helping hand" , "Helpful act" .)
'favour' is the definition.
('favour' historically meant a token of affection)
This is all the clue.
(Other definitions for rosette that I've seen before include "Ribbon decoration" , "Cockade" , "Flower-like badge" , "Decoration made of ribbons" , "Ribbon in a cluster as an award" .)