Second joke delivered positively (4)
I believe the answer is:
spun
'delivered positively' is the definition.
The answer and definition can be both to do with communicating as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?
'second joke' is the wordplay.
'second' becomes 's' (common abbreviation).
'joke' becomes 'pun' (pun is a type of joke).
's'+'pun'='SPUN'
Can you help me to learn more?
(Other definitions for spun that I've seen before include "treated by doctors?" , "(Of cotton/wool) twisted into threads" , "Twirled" , "did quick turn" , "Rotated cricket-ball" .)