1. avouch - Noun
2. avouch - Verb
To maintain a just or true; to vouch for.
To declare or assert positively and as matter of fact; to affirm openly.
To acknowledge deliberately; to admit; to confess; to sanction.
Evidence; declaration.
Source: Webster's dictionaryThe worst of my actions or conditions seem not so ugly unto me as I find it both ugly and base not to dare to avouch for them. Michel de Montaigne