'acquittance' originates from Old French, specifically the word 'acquiter,' where 'a-' meant 'to' and 'quiter' meant 'free or clear.'

'acquiter' transformed into the Middle English word 'aquiten,' and eventually became the modern English word 'acquittance.'

Initially, it meant 'to free or clear from a charge or obligation,' but over time it evolved into its current meaning of 'a written receipt attesting the settlement of a fine or debt.'