From Longman Dictionary of Contemporary Englishavowa‧vow /əˈvaʊ/ verb [transitive] formalSAY/STATE to make a public statement about something you believe in SYN swear He avowed his commitment to Marxist ideals. —avowal noun [countable, uncountable]→ See Verb table
Examples from the Corpus
avow• I believe that there is an authentic beauty in science and this is fervently avowed by many scientists.• Others avow that he intentionally distorted the trial.• We worked with one hotel chain that avowed to the point of dementia its commitment to customer service and comfort.Origin avow (1200-1300) Old French avouer, from Latin advocare; → ADVOCATE2 