'disputer' originates from the Latin word 'disputare,' where 'dis-' meant 'apart' and 'putare' meant 'to reckon or think.'

'disputare' transformed into the Old French word 'disputer,' and eventually became the modern English word 'dispute' and its derivative 'disputer.'

Initially, it meant 'to reckon or think apart,' but over time it evolved into its current meaning of 'to engage in argument or debate.'