Artificial intelligent assistant

invector

inˈvector Obs.
  [a. late L. invector, agent-n. from invehĕre: see inveigh.]
  An inveigher.

1654 Gayton Pleas. Notes iv. xxiii. 276 This is the very life of all books,..it is their guard and security from the mouths of scandalous invectors.

Oxford English Dictionary

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