Polite, refined (7)
I believe the answer is:
genteel
This clue is a double definition.
'polite' is the first definition.
(I know that polite can be written as genteel)
'refined' is the second definition.
(similar in meaning)
(Other definitions for genteel that I've seen before include "Courteous, well-bred" , "Suited to polite society" , "Well mannered" , "Exaggeratedly polite" , "Overly polite or refined" .)