'Sabbath' originates from Hebrew, specifically the word 'shabbat', where 'shabbat' meant 'rest' or 'cessation'.

'Shabbat' transformed into the Greek word 'sabbaton', and eventually became the modern English word 'Sabbath' through Old English.

Initially, it meant 'rest or cessation', but over time it evolved into its current meaning of 'a day of religious observance and rest'.