troth

Betrothal.

One’s pledged fidelity.

Good faith; fidelity.

To pledge or betroth.

To plight; betroth.

Truth; verity: as, in troth (a phrase used interjectionally, and often colloquially reduced to troth).

Faith; fidelity: as, to pledge or plight one’s troth.

Belief; faith; fidelity.

Truth; verity; veracity.