vow Synonyms

consecrate troth guarantee covenant assurance commitment oath promise pledge undertaking warrant vouch undertake testify swear sware resolution recognizance warranty solemn word give an affidavit act as a witness solemn declaration bear testimony make an affidavit swear up and down take an oath word of honour word of honor swear to God oath of office give one's word take the stand word profession profess plight betrothal betroth bename avowal avow aver assure asseveration asseverate assert affirm affiance betrothment