vows
n. countablen. serious promises you make to someone, especially during a wedding ceremony. They are meant to be kept for a very long time.
n. solemn promises or pledges, particularly those exchanged during a marriage ceremony or religious induction. Often used in the plural to refer to the formal set of commitments made between partners.
The couple wrote their own wedding vows.
After ten years of marriage, they decided to renew their vows in a small ceremony on the beach.
The monk took solemn vows of poverty, chastity, and obedience, committing his life to the service of the order and the pursuit of spiritual discipline.
Commonly used in the plural ('vows') when referring to marriage; the singular 'vow' is more frequent for general solemn promises.