'compulsory' originates from Latin, specifically the word 'compulsorius,' where 'compellere' meant 'to drive together.'

'compulsorius' transformed into the French word 'compulsif,' and eventually became the modern English word 'compulsory' through Middle English.

Initially, it meant 'to drive or force together,' but over time it evolved into its current meaning of 'required by law or rule.'