To warrant; to maintain by affirmations; to attest; to affirm; to avouch.
Atterbury
They made him ashamed to vouch the truth of the relation, and afterwards to credit it.
I can vouch that the match took place.
Shelley Mary
The tears that suffused my sister's eyes when I mentioned our friend, and her heightened colour seemed to vouch for the truth of the reports that had reached me.
To back; to support; to confirm.
Milton
Me damp horror chilled / At such bold words vouched with a deed so bold.
To call into court to warrant and defend, or to make good a warranty of title.
Blackstone
He vouches the tenant in tail, who vouches over the common vouchee.
puhekieltä To call; to summon.
Sir T. Elyot
Theyvouch (as I might say) to their aid the authority of the writers.
To bear witness; to give testimony or full attestation.
Jonathan Swift
He will not believe her until the elector of Hanover shall vouch for the truth of what she has (..) affirmed.