Theatre craft even occasionally produces wit (8)
I believe the answer is:
repartee
'wit' is the definition.
(repartee is a kind of wit)
'theatre craft even occasionally' is the wordplay.
'theatre' becomes 'rep' (I've seen this in other clues).
'craft' becomes 'art' (I've seen this before).
'occasionally' means one should take alternating letters.
The alternating letters of 'even' are 'ee'.
'rep'+'art'+'ee'='REPARTEE'
'produces' is the link.
(Other definitions for repartee that I've seen before include "Clever or witty rejoinder" , "Witty exchanges" , "Ready and witty retort" , "Quick and witty conversation" , "Clever chat" .)