A·vouch v. t. [imp. & p. p. Avouched (░); p. pr. & vb. n. Avouching.]
1. To appeal to; to cite or claim as authority. [Obs.]
They avouch many successions of authorities. --Coke.
2. To maintain a just or true; to vouch for.
We might be disposed to question its authenticity, it if were not avouched by the full evidence. --Milman.
3. To declare or assert positively and as matter of fact; to affirm openly.
If this which he avouches does appear. --Shak.
Such antiquities could have been avouched for the Irish. --Spenser.
4. To acknowledge deliberately; to admit; to confess; to sanction.
Thou hast avouched the Lord this day to be thy God. --Deut. xxvi. 17.