Artificial intelligent assistant

avouched

avouched, ppl. a.
  (əˈvaʊtʃt)
  [f. avouch v. + -ed.]
  Vouched for; acknowledged, avowed.

1637 Gillespie Eng.-Pop. Cerem. Ep. A iv, Professed Papists and avouched Atheists. 1846 Grote Greece i. xiii. (1862) I. 207 Matter of fact generally unquestionable, though little avouched as to details.

Oxford English Dictionary

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