Artificial intelligent assistant

devaunt

deˈvaunt, v. Obs.
  [app. a. OF. desvanter to vaunt excessively, make one's boast, f. des-, L. dis- + vanter to vaunt, boast.]
  To vaunt, boast.

c 1540 Surr. Northampton Priory in Prance Addit. Narr. Pop. Plot 36 To the most notable slaunder of Christs Holy Evangely, which..wee did ostentate and openly devant to keepe most exactly.

  [1655 quoted by Fuller Ch. Hist. vi. 320 with spelling devaunt, mod. ed. advaunte.]

Oxford English Dictionary

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