[plight] {one's} troth

to make a formal vow to get married to someone

In a traditional ceremony, they plighted their troth before family and friends, pledging their lifelong commitment.
Plighting one's troth is a solemn declaration of love and fidelity, a promise to stand by each other through thick and thin.
As they exchanged rings, they symbolically plighted their troth, sealing their commitment to each other.
The couple decided to plight their troth privately, exchanging vows in a quiet ceremony by the seaside.
Plighting one's troth is a deeply meaningful gesture, signifying the beginning of a shared journey towards marriage and lifelong partnership.