'improperly-cancelled' originates from the combination of 'improperly' and 'cancelled', where 'improperly' is derived from Latin 'improprius', meaning 'not proper', and 'cancelled' from Latin 'cancellare', meaning 'to cross out'.

'improperly' changed from the Latin word 'improprius' and 'cancelled' from 'cancellare', eventually forming the modern English term 'improperly-cancelled'.

Initially, 'cancelled' meant 'to cross out', but over time it evolved into its current meaning of 'to annul or void'.