Not exactly a family affair following (4,2)
I believe the answer is:
kind of
'not exactly' is the definition.
(both can mean 'somewhat')
'a family affair following' is the wordplay.
'a family' becomes 'kin' (synonyms).
'affair' becomes 'do' (do is a kind of affair).
'following' becomes 'f.' (used when citing page numbers etc).
'kin'+'do'+'f'='KIND OF'
(Other definitions for kind of that I've seen before include "Rather" , "After a fashion" , "Somewhat" , "Not exactly" .)