Artificial intelligent assistant

vouchment

vouchment Obs.—1
  [a. OF. vouchement (15th c.), or f. vouch v. + -ment.]
  The action of vouching; a solemn assertion or affirmation.

a 1670 Hacket Abp. Williams i. (1693) 77 The Peers..lay not their Hand upon the Book, but upon their Breast; which is a Sign that their vouchment by their Honour in that Tryal is not an Oath.

Oxford English Dictionary

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