Entry 3 senses · 3 variants Webster, 1913 Trothplight · Troth·plight · IPA v. t. a. n. 01 v. t. To betroth. 1. To betroth.[Obs.] 02 a. Betrothed; espoused; affianced. 1. Betrothed; espoused; affianced.[Obs.] 03 n. The act of betrothing, or plighting faith; betrothing. 1. The act of betrothing, or plighting faith; betrothing.[Obs.]