To own or acknowledge obligation or relation to, as a person: as, he avowed him for his son.To sanction; approve.To declare openly, often with a view to justify, maintain, or defend: as, to avow one's principles.Specifically, in law, to acknowledge and justify, as when the distrainer of goods defends in an action of replevin, and avows the taking, but insists that such taking was legal. See avowry, 1.5. To admit or confess openly or frankly; acknowledge; own: as, to avow one's self a convert.Synonyms To affirm, assert, profess. Admit, Confess, etc. See acknowledge.In law, to justify or maintain an act done, specifically a distress for rent taken in one's own right.n. An avowal; a bold declaration.To bind with a vow.2. To devote or dedicate by a vow; vow.To vow to do or keep; promise; undertake.To bind one's self by a vow; make a vow; vow.n. A vow; a promise.