Artificial intelligent assistant

catastrophic

catastrophic, a.
  (kætəˈstrɒfɪk)
  [ad. Gr. καταστροϕικ-ός, f. καταστροϕή catastrophe.]
  Of the nature of, or belonging to, a catastrophe: esp. in the history of the earth or the universe.

1837 Whewell Hist. Induct. Sc. (1857) III. 512 The supposed proofs of catastrophic transition. 1849 Murchison Siluria xx. 491 A catastrophic destruction of such animals. 1871 E. H. Plumptre Spirits in Pris. (1884) 348 Events which are not continuous, but catastrophic..such as the Resurrection and the Last Judgment.

Oxford English Dictionary

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