'disputant' originates from Latin, specifically the word 'disputans,' where 'dis-' meant 'apart' and 'putare' meant 'to reckon or think.'

'disputans' transformed into the French word 'disputant,' and eventually became the modern English word 'disputant' through Middle English.

Initially, it meant 'one who reckons or thinks apart,' but over time it evolved into its current meaning of 'a person involved in a dispute or argument.'