二に世せの固かため

noun

marriage vows; pledge of eternal love

A poetic or literary term for a vow of lifelong commitment between lovers, often implying a promise to be together in the next life as well. Compare with 二世の約束, which is more common.

See also: 二世の約束

• 二人ふたりは二に世せの固かためを交かわした。

  The two exchanged vows of eternal love.