Definition of "avouch" []

• To declare the provable truth or validity of; affirm: She avouched that she herself was innocent. (verb-transitive)
• To corroborate or confirm; vouch for: Has this report been avouched? (verb-transitive)
• To accept responsibility for (an action, for example); acknowledge. (verb-transitive)
• To avow; confess. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The Duke had now recovered his breath, and was able to sit up and give attention to what passed betwixt Dunois and Crawford, while the former pleaded eagerly that there was no occasion to mention in the matter the name of the most noble Orleans, while he was ready to take the whole blame on his own shoulders, and to avouch that the Duke had only come thither in friendship to him."
• "We do not hear you avouch your own knowledge of this matter, further than your belief resting upon the demeanour of this hound towards the Marquis of Montserrat."
• "They avouch that every element and different state of being have animals resembling those of another element, as there be fishes at sea resembling Monks of late order in all their hoods and dresses, so as the Roman invention of good and bad daemons and guardian angels particularly assigned, is called by them ane ignorant mistake, springing only from this originall."