Artificial intelligent assistant

infide

inˈfide, a. Obs. rare—1.
  [ad. L. infīdus, f. in- (in-3) + fīdus faithful.]
  Faithless, dishonest, treacherous.

1663 Flagellum or O. Cromwell (ed. 2) 4 The Elements of Language and principals of Religion, both which he studied with the same indifference, and infide and fallacious endevour.

Oxford English Dictionary

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