Family fare, fine to some extent (4,2)
I believe the answer is:
kind of
'to some extent' is the definition.
(thesaurus)
'family fare fine' is the wordplay.
'family' becomes 'kin' (synonyms).
'fare' becomes 'do' (synonyms).
'fine' becomes 'f' (abbreviation).
'kin'+'do'+'f'='KIND OF'
(Other definitions for kind of that I've seen before include "Somewhat" , "After a fashion" , "Not exactly" , "Rather" .)