'abuser' originates from Old French, specifically the word 'abuser', where 'ab-' meant 'away' and 'user' meant 'to use'.

'abuser' changed from the Old French word 'abuser' and eventually became the modern English word 'abuser'.

Initially, it meant 'to misuse or deceive', but over time it evolved into its current meaning of 'someone who mistreats others'.