[uh-tohn] 
verb, a⋅toned, a⋅ton⋅ing.| 1. | to make amends or reparation, as for an offense or a crime, or for an offender (usually fol. by for): to atone for one's sins. |
| 2. | to make up, as for errors or deficiencies (usually fol. by for): to atone for one's failings. |
| 3. | Obsolete. to become reconciled; agree. |
| 4. | to make amends for; expiate: He atoned his sins. |
| 5. | Obsolete. to bring into unity, harmony, concord, etc. |
