'foreseeably-prolonged' originates from the combination of 'foreseeably' and 'prolonged'. 'Foreseeably' comes from 'foresee', which originates from Old English 'foreseon', meaning 'to see beforehand'. 'Prolonged' comes from Latin 'prolongare', where 'pro-' meant 'forward' and 'longare' meant 'to make long'.

'foreseeably' evolved from the Old English 'foreseon' and 'prolonged' from the Latin 'prolongare', eventually combining to form the modern English term 'foreseeably-prolonged'.

Initially, 'foreseeably' meant 'able to be seen beforehand', and 'prolonged' meant 'extended in time'. Together, they convey the idea of something extended for a predictable period.