Making a public vow is a time-honored way to stick to one's commitments.
The global goodwill resulting from such a high-profile vow would be enormous.
It also comes as automakers vow to bring us plug-in hybrids and electric vehicles within the next few years.
Plan to eliminate other parts of speech as needed, maybe take vow of silence.
He does, and promises to change, but soon breaks his vow.
Unfortunately, a virus caused me to reconsider that vow.
The college freshman took a vow of silence last year in order to become a better listener.
Whether this was a prediction or a threat was unclear, so she took a vow of silence.
Homeless human heroes vow to survive, and the show follows their quest for a new place in space.
Thorpe delivers this vow with absolute conviction and heartfelt sincerity.
British Dictionary definitions for vow
a solemn or earnest pledge or promise binding the person making it to perform a specified act or behave in a certain way
a solemn promise made to a deity or saint, by which the promiser pledges himself to some future act, course of action, or way of life
take vows, to enter a religious order and commit oneself to its rule of life by the vows of poverty, chastity, and obedience, which may be taken for a limited period as simple vows or as a perpetual and still more solemn commitment as solemn vows
(transitive; may take a clause as object or an infinitive) to pledge, promise, or undertake solemnly he vowed that he would continue, he vowed to return
(transitive) to dedicate or consecrate to God, a deity, or a saint
(transitive; usually takes a clause as object) to assert or swear emphatically
(intransitive) (archaic) to declare solemnly
vower, noun vowless, adjective
C13: from Old French vou, from Latin vōtum a solemn promise, from vovēre to vow
c.1300, from Anglo-Fr. and O.Fr. vou, from L. votum "a vow, wish, promise, dedication," noun use of neut. of votus, pp. of vovere "to promise solemnly, pledge, dedicate, vow," from PIE base *ewegwh- "to speak solemnly, vow" (cf. Skt. vaghat- "one who offers a sacrifice;" Gk. eukhe "vow, wish," eukhomai "I pray"). The verb is attested from c.1300, from O.Fr. vouer.