Artificial intelligent assistant

annihilative

annihilative, a.
  (ɑːˈnaɪhɪlətɪv)
  [f. L. annihilāt- (see annihil) + -ive.]
  Such as to annihilate; destructive, crushing.

1836 Blackw. Mag. XL. 255 Darkness [seems]..suppressive or annihilative of life. 1865 Carlyle Fredk. Gt. VII. xviii. iii. 129 Victory at Prag considered to be much more annihilative than it really was.

Oxford English Dictionary

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