Webster's Revised Unabridged Dictionary · 1913

Trothplight

Trothplight , transitive verb

To betroth. [Obsolete]

Trothplight , adjective

Betrothed; espoused; affianced. [Obsolete] — Shakespeare

Trothplight , noun

The act of betrothing, or plighting faith; betrothing. [Obsolete] — Shakespeare