Nouns

(n)predicament, quandary, plighta situation from which extrication is difficult especially an unpleasant or trying one“finds himself in a most awkward predicament”, “the woeful plight of homeless people”
(n)plight, trotha solemn pledge of fidelity

Verbs

(v)betroth, engage, affiance, plightgive to in marriage
(v)pledge, plightpromise solemnly and formally“I pledge that I will honor my wife”