Good-humoured teasing (8)
I believe the answer is:
raillery
'good-humoured teasing' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for raillery that I've seen before include "Satirical banter" , "Light teasing repartee" , "Badinage" , "(Example of) banter" , "Banter, back-chat" .)