Wicked home with time for witty conversation (8)
I believe the answer is:
Here is my best explanation:
'witty conversation' is the definition.
(I've seen this before)
'wicked home with time' is the subsidiary indication.
'wicked' becomes 'bad' ('bad' can be similar in meaning to 'wicked').
'home' becomes 'in' ('he's home' can mean 'he's in').
'with' says to put letters next to each other.
'time' becomes 'age' (age is a kind of time).
'for' is the link.
(Other definitions for badinage that I've seen before include "Drollery", "Playful repartee", "Good-natured banter or teasing", "Josh", "Humorous banter", "Teasing talk, banter", "Good-humoured banter (8)", "bit of playful repartee", "Frivolous banter" and "Humorous, witty conversation".)