troth Meaning, Definition & Usage

  1. noun a mutual promise to marry
    betrothal; engagement.
  2. noun a solemn pledge of fidelity
    plight.

WordNet

Troth noun
Etymology
A variant of truth. See Truth.
Definitions
  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