Artificial intelligent assistant

king-killer

ˈking-ˌkiller
  One who kills a king; a regicide.

1607 Shakes. Timon iv. iii. 382 O thou sweete King-killer, and deare diuorce Twixt naturall Sunne and sire. 1681 T. Flatman Heraclitus Ridens No. 24 (1713) I. 158 They'll give you leave to roast them at Temple-Bar with their Brother King-killer the Pope. 1726 De Foe Hist. Devil (1822) 244 No less than a King-Killer and an assassinator.

Oxford English Dictionary

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