Simple past tense and past participle of atone.(verb)
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Use "atoned" in a sentence
"I'm glad that John McCain atoned for his dismal presidential campaign by joining them. nclaw441"
"Lidstrom atoned from the error at 7: 14 with his first goal, a wrist shot from just inside the top of the left faceoff circle at the very moment a two-man advantage for Detroit expired, tying the game at 2."
"Some beauty must have been described in the idiom, such as atoned for its solecism: for Milton recurs to the same idiom, and under the same entire freedom of choice, elsewhere; particularly in this instance, which has not been pointed out: 'And never,' says Satan to the abhorred phantoms of Sin and Death, when crossing his path,"