'foreseeably-moving' originates from the combination of 'foreseeably' and 'moving'. 'Foreseeably' comes from 'foresee', which originates from Old English 'foreseon', where 'fore-' meant 'before' and 'seon' meant 'to see'. 'Moving' comes from Latin 'movere', meaning 'to move'.

'foreseeably' changed from Old English 'foreseon' to Middle English 'forseon', and eventually became the modern English word 'foresee'. 'Moving' evolved from Latin 'movere' to Old French 'movoir', and eventually became the modern English word 'move'.

Initially, 'foresee' meant 'to see beforehand', and 'move' meant 'to change position'. The combined term 'foreseeably-moving' retains these meanings, indicating something that can be anticipated to change position.