Artificial intelligent assistant

nuncius

nuncius rare.
  (ˈnʌnʃ(ɪ)əs)
  [a. L. nuncius: cf. nuntius.]
  A messenger.

1613–16 W. Browne Brit. Past. i. i, The Nuncius of peace, the seely Dove. ? 1633 Cowley Dream of Elysium 89 Th' watchfull Bird, true Nuncius of the Light, Straight crow'd. 1848 Lytton Harold iii. ii, He stretched forth his sceptre, and motioning to his chamberlain, bade him introduce the nuncius.

Oxford English Dictionary

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