1) Anteboshmarch 1) Desponsage 2) Engagement 3) Troth 1) Engagement 2) Mutual promise to marry 3) Promise 4) Troth 
• (n.) The act of betrothing, or the fact of being betrothed; a mutual promise, engagement, or contract for a future marriage between the persons betrothed; betrothment; affiance.
promise or engagement between a man and a woman that they will be married. In societies in which premarital sexual relations are condoned or in ... [3 related articles]
Be·troth'al noun The act of betrothing, or the fact of being betrothed; a mutual promise, engagement, or contract for a future marriage between the persons betrothed; betrothment; affiance. 'The feast of betrothal .' Longfellow. 
[n] - a mutual promise to marry 2. [n] - the act of becoming betrothed or engaged
troth 2 engagement noun a mutual promise to marry
the act or state of being betrothed; engagement.