Artificial intelligent assistant

Acephalist

Aˈcephalist Obs. rare.
  [f. ἀκέϕαλ-ος + -ist.]
  One who professes the doctrines of the (Ecclesiastical) Acephali; one who acknowledges no head or superior.

1659 Gauden Eccl. Angl. Susp. 464, I ask these Acephalists, who will indure no head but that on their own shoulders, whether the City of London is worse governed, because it hath a Lord Maior among and above the Aldermen and Common Councel. 1696 Phillips, Acephalists, a sort of Hereticks, whose first founder is unknown; also Vagabond Clergymen, having neither King nor Bishop for their Head.

Oxford English Dictionary

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