'dispositional' originates from the Latin word 'dispositio', where 'dis-' meant 'apart' and 'positio' meant 'placing'.

'dispositio' transformed into the Old French word 'disposition', and eventually became the modern English word 'disposition', with 'dispositional' as its adjective form.

Initially, it meant 'arrangement or placing', but over time it evolved into its current meaning of 'relating to inherent qualities'.