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 in pencil classifications).
'kin'+'do'+'f'='KIND OF'
(Other definitions for kind of that I've seen before include "Somewhat" , "After a fashion" , "Not exactly" , "Rather" .)