'non-chargeable' originates from the prefix 'non-' meaning 'not' and the word 'chargeable', which comes from the Old French 'chargier', meaning 'to load or burden'.

'chargeable' evolved from the Old French word 'chargier', which was adapted into Middle English as 'charge', eventually forming the modern English word 'chargeable'.

Initially, 'chargeable' meant 'liable to be loaded or burdened', but over time it evolved to mean 'liable to incur a charge or fee'.