Part of England not acceptable? Not acceptable, and that's genuine (6)
I believe the answer is:
devout
'that's genuine' is the definition.
(thesaurus)
'part of england not acceptable? not acceptable' is the wordplay.
'part of england' becomes 'devon' (I've seen this before).
'not' is a deletion indicator.
'acceptable?' becomes 'on' (as opposed to not on, unacceptable).
'not acceptable' becomes 'out' (cricket term).
'devon' with 'on' taken out is 'dev'.
'dev'+'out'='DEVOUT'
'and' is the link.
(Other definitions for devout that I've seen before include "Reverent" , "Religiously observant" , "sincere" , "Sincerely religious" , "Religiously committed" .)