Artificial intelligent assistant

indefectuous

indeˈfectuous, a. Obs. rare—0.
  [f. in-3 + defectuous: cf. obs. F. indeffectueux (16th c. in Godef.).]
  = prec. Hence indeˈfectuousness.

a 1687 H. More in Norris The. Love (1688) 153 Those terms Totum and Omne..may signify either the Entireness, Indefectuousness or Perfection of the thing they are pronounced of.

Oxford English Dictionary

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