'unfairness' originates from Old English, specifically the word 'unfæger,' where 'un-' meant 'not' and 'fæger' meant 'fair or beautiful.'

'unfæger' transformed into the Middle English word 'unfaire,' and eventually became the modern English word 'unfairness.'

Initially, it meant 'not beautiful or pleasing,' but over time it evolved into its current meaning of 'not just or equitable.'