/ əˈvaʊ; NAmE / verb
( formal ) to say firmly and often publicly what your opinion is, what you think is true, etc. :
[ v that ]
An aide avowed that the President had known nothing of the deals.
[also vn , v speech ]
► avow·al / əˈvaʊəl; NAmE / noun ( formal ):
an avowal of love
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WORD ORIGIN
Middle English (in the senses acknowledge, approve and vouch for ): from Old French avouer acknowledge, from Latin advocare summon in defence, from ad- to + vocare to call.