condonation

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The act of condoning, especially the implied forgiveness of an offense by ignoring it.

from The Century Dictionary.

• noun The act of condoning, or of pardoning a wrong act: as, the condonation of an offense.
• noun Specifically In law, the act or course of conduct by which a husband or a wife is held to have pardoned a matrimonial offense committed by the other, as the taking back of his wife by a husband, knowing that she has committed adultery. To have this effect, the conduct must be such as to imply intentional and voluntary remission.

from the GNU version of the Collaborative International Dictionary of English.

• noun The act of condoning or pardoning.
• noun (Law) Forgiveness, either express or implied, by a husband of his wife or by a wife of her husband, for a breach of marital duty, as adultery, with an implied condition that the offense shall not be repeated.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The condoning of an offence
• noun The forgiveness of matrimonial infidelity

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a pardon by treating the offender as if the offense had not occurred