pardon — kind indulgence, as in forgiveness of an offense or discourtesy or in tolerance of a distraction or inconvenience: I beg your pardon, but which way is Spruce Street?
exculpation — The act of exculpating from alleged fault or crime; that which exculpates; excuse.
absolution — If someone is given absolution, they are forgiven for something wrong that they have done.
acquittal — Acquittal is a formal declaration in a court of law that someone who has been accused of a crime is innocent.