Suspend during church reform (6)
I believe the answer is:
change
'reform' is the definition.
(I've seen this before)
'suspend during church' is the wordplay.
'suspend' becomes 'hang' (I've seen this before).
'during' means one lot of letters goes inside another.
'church' becomes 'ce' (abbreviation for Church of England).
'hang' going into 'ce' is 'CHANGE'.
(Other definitions for change that I've seen before include "It may be small" , "we vary our routine for one" , "Innovation" , "Alteration" , "Replace" .)