Origin: 1615–25, but in general currency from its use in the British Divorce Act of 1857 (see def. 5); < Latincondōnāre to absolve, grant pardon, equivalent to con-con- + dōnāre to give; see donate
1857, from L. condonare "to give up, remit," from com- intensive prefix + donare "to give" (see donation). Originally a legal term in the Matrimonial Causes Act, which made divorce a civil matter in Britain.