Definition: a solemn pledge of fidelity
Similar words: pledge, assurance
Definition: a binding commitment to do or give or refrain from something
Usage: an assurance of help when needed; signed a pledge never to reveal the secret
Synonyms: troth, engagement, betrothal
Definition: a mutual promise to marry
Similar words: promise
Definition: a verbal commitment by one person to another agreeing to do (or not to do) something in the future