Entry 3 senses Webster, 1913 Troth /trōth/ · IPA /tɹoʊθ/ 01 n. Belief; faith; fidelity. 1. Belief; faith; fidelity. “Bid her alight And hertroth plight.” — Shak. 2. Truth; verity; veracity; as, by my troth. “In troth, thou art able to instruct gray hairs.” — Addison. 3. Betrothal.