'nonpayer' originates from the prefix 'non-' meaning 'not' and the word 'payer', which comes from the Old French 'paier', meaning 'to pay'.

'payer' changed from the Old French word 'paier' and eventually became the modern English word 'payer'.

Initially, 'payer' meant 'one who pays', and with the prefix 'non-', it evolved to mean 'one who does not pay'.