'week' originates from Old English, specifically the word 'wice', where 'wice' meant 'a turning' or 'a succession of days'.

'wice' changed from Old English word 'wice' and eventually became the modern English word 'week'.

Initially, it meant 'a turning' or 'a succession of days', but over time it evolved into its current meaning of 'a period of seven days'.