Abatement of charge on crazy misers (9)
I believe the answer is:
remission
'abatement' is the definition.
(I know that remission is a type of abatement)
'charge on crazy misers' is the wordplay.
'charge' becomes 'ion' (an ion is a charged particle).
'on' means one lot of letters go next to another.
'crazy' is an anagram indicator.
'misers' anagrammed gives 'remiss'.
'ion' after 'remiss' is 'REMISSION'.
'of' acts as a link.
(Other definitions for remission that I've seen before include "Reprieve" , "Lessening of a term of imprisonment" , "Relief" , "prison sentence is cut" , "Reduction of charge" .)