Artificial intelligent assistant

expugnative

exˈpugnative, a. Obs. rare—1.
  [f. L. expugnāt-, ppl. stem of expugnāre: see expugn and -ive. Cf. OF. expugnatif, -ive.]
  Tending to take by storm; tending to drive out.

c 1630 Jackson Creed iv. iii. ix. Wks. III. 466 The expugnative or expulsive force.

Oxford English Dictionary

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