Artificial intelligent assistant

alternal

alˈternal, a. Obs. rare.
  [f. L. altern-us: see altern and -al1 I. 3.]
  = alternate a.

1571 T. N[ewton] Lemnie's Touchst. Complex. (1633) 91 That thing that lackes alternall rest, continue cannot long. 1611 Florio, Vicissitudinale, according to an alternall or enterchangeable course. [Not in J.; but in Todd, etc.]


Oxford English Dictionary

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