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English definition of “vow”

vow

verb    /vɑʊ/
to make a firm promise or decision to do something: [+ (that) clause] They vowed (that) they would never forget her kindness. [+ to infinitive] After my illness I vowed to exercise every day. vow    /vɑʊ/ noun [C] They exchanged marriage vows in a Manhattan courthouse.
(Definition of vow verb from the Cambridge Academic Content Dictionary © Cambridge University Press)
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