atone

Short definition from Wiktionary

Verb

1. 1
   To make reparation, compensation, amends or satisfaction for an offence, crime, mistake or deficiency.
2. 2
   To bring at one or at concordance; to reconcile; to suffer appeasement.
3. 3
   To agree or accord; to be in accordance or harmony.
4. 4
   To unite in making.
5. 5
   To absolve (someone else) of wrongdoing, especially by standing as an equivalent.