'adulter' originates from Latin, specifically the word 'adulterare,' where 'ad-' meant 'to' and 'alter' meant 'other.'

'adulterare' transformed into the Old French word 'adulterer,' and eventually became the modern English word 'adulter' through Middle English.

Initially, it meant 'to make other or different,' but over time it evolved into its current meaning of 'to corrupt or make impure.'