'unfairly-executed' originates from the combination of 'unfairly' and 'executed', where 'unfairly' means 'in a manner that is not fair' and 'executed' means 'carried out or performed'.

'unfairly' and 'executed' have been used separately in English since the Middle Ages, but their combination into 'unfairly-executed' is a modern construct.

Initially, 'unfairly' meant 'not fair' and 'executed' meant 'carried out', and this combined meaning has remained consistent.