Synonyms of vow in English:

vow


See definition of vow

noun

1‘the monks had taken a vow of silence’

SYNONYMS

oath, pledge, promise, bond, covenant, commitment, avowal, profession, sworn statement, affirmation, attestation, assurance, word, word of honour, guarantee

archaic troth

rare asseveration, averment


verb

1‘I vowed to do better’

SYNONYMS

swear, state under oath, swear under oath, swear on the Bible, take an oath, pledge, promise, affirm, avow, undertake, give an undertaking, engage, commit, commit oneself, make a commitment, give one's word, give one's word of honour, give an assurance, guarantee

depose, make a deposition, bind oneself

archaic plight, asseverate