'foreshadow' originates from Middle English, specifically the prefix 'fore-' meaning 'before' and the word 'shadow' meaning 'a dark shape or area.'

'foreshadow' changed from the Middle English word 'forshadwen' and eventually became the modern English word 'foreshadow'.

Initially, it meant 'to cast a shadow before,' but over time it evolved into its current meaning of 'to indicate or suggest beforehand.'