'non-subscriber' originates from the prefix 'non-' meaning 'not' and the word 'subscriber' from Latin 'subscribere', where 'sub-' meant 'under' and 'scribere' meant 'to write'.

'subscriber' changed from the Latin word 'subscribere' and eventually became the modern English word 'subscriber'.

Initially, 'subscriber' meant 'one who writes under', but over time it evolved into its current meaning of 'one who subscribes to a service or publication'.