Filthy bones scattered round church (7)
I believe the answer is:
obscene
'filthy' is the definition.
(I've seen this in another clue)
'bones scattered round church' is the wordplay.
'scattered' indicates anagramming the letters.
'round' means one lot of letters goes inside another.
'church' becomes 'CE' (Church of England).
'bones' is an anagram of 'obsne'.
'obsne' placed around 'ce' is 'OBSCENE'.
(Other definitions for obscene that I've seen before include "Dirty" , "Bawdy" , "Shocking" , "One's CBE (anag)" , "Shameless" .)