Artificial intelligent assistant

regnicide

ˈregnicide Obs. rare.
  [f. L. regni-, regnum kingdom + -cide 1.]
  One who destroys a kingdom.

1607 Bp. J. King Serm. 5 Nov. 28 They..become paricides, Regicides, Regnicides at once. 1615 T. Adams England's Sickness Wks. 1861 I. 418 Regicides are no less than regnicides,..for the life of a king contains a thousand thousand lives.

Oxford English Dictionary

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