seat: [12] Seat is of course a close relative of sit – they come from the same prehistoric Germanic base, *set-. But unlike sit, it is not a longestablished native word. It is a borrowing, from Old Norse sáeti. It originally meant ‘act of sitting’, and was not used for ‘something to sit on’ until the 13th century. => sit[seat etymology, seat origin, 英语词源]