vow
/vaʊ/
noun
Meaning
A solemn promise to perform some act, or behave in a specified manner, especially a promise to live and act in accordance with the rules of a religious order.
"The old hermit, up in the mountains, took a vow of silence."
A declaration or assertion.
A votive offering.
verb
Meaning
To make a vow; to promise.
To make a vow regarding (something).
"The wronged woman vowed revenge."
To declare publicly that one has made a vow, usually to show one's determination or to announce an act of retaliation.
"The rebels vowed to continue their fight."