To avow is defined as to make it known or to admit to it.(verb)
When a politician admits his guilt to reporters this an example of avow.
See avow in Webster's New World College Dictionary
Origin: ME avowen < OFr avouer < L advocare: see advocate
See avow in American Heritage Dictionary 4
transitive verb a·vowed, a·vow·ing, a·vows
Origin: Middle English avowen
Origin: , from Old French avouer
Origin: , from Latin advocāre, to call upon; see advocate.
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