Artificial intelligent assistant

hebdomatical

hebdoˈmatical, a. Obs. rare.
  [f. late L. hebdomatic-us, irreg. ad. Gr. ἑβδοµαδικός weekly + -al1.]
  Weekly; hebdomadary.

a 1659 Morton Episc. Ch. (1670) 142 Far from the conceipt of a Deambulatory, Hebdomatical (or peradventure Ephemeral) Office.

Oxford English Dictionary

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