'fairly-handled' originates from the combination of 'fairly' and 'handled', where 'fairly' means 'in a fair manner' and 'handled' means 'managed or dealt with'.

'fairly' and 'handled' have been used in English since the Middle Ages, and their combination into 'fairly-handled' reflects a modern usage to describe actions or processes.

Initially, 'fairly' meant 'in a fair manner', and 'handled' meant 'managed'. The combination retains the original meanings to describe actions done justly.