'impartiality' originates from the Latin word 'impartialitas', where 'im-' meant 'not' and 'partialitas' meant 'partiality'.

'impartialitas' transformed into the Old French word 'impartialité', and eventually became the modern English word 'impartiality'.

Initially, it meant 'not partial', but over time it evolved into its current meaning of 'the quality of being unbiased and fair'.