'enforce' originates from Old French, specifically the word 'enforcier,' where 'en-' meant 'in' and 'forcier' meant 'to force.'

'enforcier' transformed into the Middle English word 'enforcen,' and eventually became the modern English word 'enforce'.

Initially, it meant 'to strengthen or fortify,' but over time it evolved into its current meaning of 'to compel observance of a law or rule.'