/ Dictionary / Index B betroth: Meaning and Definition of Find definitions for: be•troth Pronunciation: (bi-trō', -trôth'), [key] — v.t. to arrange for the marriage of; affiance (usually used in passive constructions): The couple was betrothed with the approval of both families. to promise to marry. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: betroth (Thesaurus) betray betrothal Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language