'adaptional' originates from the word 'adapt,' which comes from Latin, specifically the word 'adaptare,' where 'ad-' meant 'to' and 'aptare' meant 'to fit.'

'adaptare' transformed into the French word 'adapter,' and eventually became the modern English word 'adapt' through Middle English.

Initially, it meant 'to fit or adjust,' and over time it evolved into its current meaning of 'to make suitable for a new use or purpose.'