Artificial intelligent assistant

discursist

diˈscursist Obs. rare—1.
  [f. L. discursus, in sense ‘discourse’ + -ist.]
  One who practises discoursing, a disputer.

1671 L. Addison West Barbary Pref. (T.), Great discursists were apt to intrigue affairs, dispute the Prince's resolution, and stir up the people.

Oxford English Dictionary

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