'affeeror' originates from Old French, specifically the word 'afeurer,' where 'a-' meant 'to' and 'feurer' meant 'to fix or determine.'

'afeurer' transformed into the Middle English word 'affeerour,' and eventually became the modern English word 'affeeror'.

Initially, it meant 'to fix or determine fines,' and this meaning has largely remained the same in modern usage.