Playful banter (8)
I believe the answer is:
badinage
'playful banter' is the definition.
(badinage means cheerful banter)
This is all the clue.
(Other definitions for badinage that I've seen before include "Frivolous backchat" , "Beg Diana for light banter" , "Humorous, witty conversation" , "Ribbing" , "joking" .)