1. vow In the highest sense, as in a court of justice, "an oath is a reverent appeal to God in corroboration of what one says," ABBOTT Law Dict.; an affidavit is a sworn statement made in writing in Synonyms: oath, adjuration, curse, profane swearing, affidavit, cursing, profanity, anathema, denunciation, reprobation, ban, execration, swearing, blaspheming, imprecation, sworn statement, blasphemy, malediction, vow Antonyms: benediction, benison, blessing