Vow

noun \ˈvau̇\

: a serious promise to do something or to behave in a certain way

Full Definition of VOW

:  a solemn promise or assertion; specifically :  one by which a person is bound to an act, service, or condition

Examples of VOW

1. The monks take a vow of silence.
2. The bride and groom exchanged vows.
3. The mayor made a vow to reduce crime.

Origin of VOW

Middle English vowe, from Anglo-French vou, from Latin votum, from neuter of votus, past participle of vovēre to vow; akin to Greek euchesthai to pray, vow, Sanskrit vāghat sacrificer

First Known Use: 13th century

 

- Merriam-Webster's Dictionary