'inadvertently' originates from Latin, specifically the word 'inadvertentem,' where 'in-' meant 'not' and 'advertentem' meant 'turning the mind to.' 'Cancelled' comes from Latin 'cancellare,' meaning 'to cross out.'

'inadvertently' changed from the Latin word 'inadvertentem' and eventually became the modern English word 'inadvertently.' 'Cancelled' evolved from the Latin 'cancellare' through Old French 'canceller' to Middle English 'cancellen.'

Initially, 'inadvertently' meant 'not turning the mind to,' but over time it evolved into its current meaning of 'without intention.' 'Cancelled' has largely retained its original meaning of 'crossing out or nullifying.'