Troth (?), n. [A variant of truth. See Truth.]
1.
Belief; faith; fidelity.
Bid her alight
And hertroth plight.
Shak.
2.
Truth; verity; veracity; as, by my troth.
Shak.
In troth, thou art able to instruct gray hairs.
Addison.
3.
Betrothal.
© Webster 1913.