Restitution (6)
I believe the answer is:
amends
'restitution' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for amends that I've seen before include "Make these to atone for wrong done" , "Fixes" , "Make these to atone for injuries or loss caused" , "Improves - damages" , "Frees from error" .)