Wiktionary
avoucheth
vb. (context archaic English) (en-third-person singular of: avouch)
Usage examples of "avoucheth".
The contents of the missive were quite fair: "There hath appeared in our land a man, mortal, by name Hasan, and our sister Manar al-Sana avoucheth that she is lawfully married to him according to the conventions of his country and that she bare him two sons whose origin she tried to conceal from us and from thee.