Artificial intelligent assistant

prayant

ˈprayant, a. Obs.
  [f. pray v. + -ant 1.]
  Praying.

1659 Gauden Tears of Ch. i. xii. 93 Fanatick Errour and Levity would seem an Euchite as well as an Eristick, Prayant as well as Predicant.

Oxford English Dictionary

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