'Sabbath-related' originates from the word 'Sabbath,' which comes from the Hebrew word 'Shabbat,' meaning 'rest' or 'cessation.' The suffix '-related' is used to indicate association or connection.

The term 'Sabbath' was adopted into Old English as 'sabbot' and later evolved into the modern English 'Sabbath.' The suffix '-related' is a modern English addition to form adjectives indicating association.

Initially, 'Sabbath' referred specifically to the Jewish day of rest, but it has expanded to include similar observances in other religions.