Dictionary
1. (
n.) A solemn promise made to God, or to some deity; an act by which one consecrates or devotes himself, absolutely or conditionally, wholly or in part, for a longer or shorter time, to some act, service, or condition; a devotion of one's possessions; as, a baptismal vow; a vow of poverty.
2. (n.) Specifically, a promise of fidelity; a pledge of love or affection; as, the marriage vow.
3. (n.) To give, consecrate, or dedicate to God, or to some deity, by a solemn promise; to devote; to promise solemnly.
4. (n.) To assert solemnly; to asseverate.
5. (v. i.) To make a vow, or solemn promise.
Thesaurus
Bible oathaffirmand candleassertassert under oathasseverateassuranceassureattestavouchavouchmentavowbookcertifyconfesscountersigncovenantdeclaredeponedeposeexpress the beliefextrajudicial oathfaithguaranteeironclad oathjudicial oathkiss the bookloyalty oathmake a promiseoathoath of allegianceoath of officeofficial oathparolepledgeplightprofesspromisesolemn declarationsolemn oathstateswanswearswear by bellswear the truthswear toswear to Godswear to goodnesstest oathtestifytrothunderwritevouchwarrantwarrantywordword of honor