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cataclysmic

or cataclysmal

[kat-uh-kliz-mik] /ˌkæt əˈklɪz mɪk/
adjective
1.
of, relating to, or resulting from a cataclysm.
2.
of the nature of, or having the effect of, a cataclysm:
cataclysmic changes.
Origin of cataclysmic
1850-1855
First recorded in 1850-55; cataclysm + -ic
Related forms
cataclysmically, adverb
noncataclysmal, adjective
noncataclysmic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for cataclysmic
Contemporary Examples
Historical Examples
  • cataclysmic changes were taking place in the soul of Martin Wade.

    Dust Mr. and Mrs. Haldeman-Julius
  • And of course, at this critical moment, there arrived the cataclysmic letter from Stair.

    Patsy S. R. Crockett
  • Then Ranny delivered his soul, and the escape, the outburst was tremendous, cataclysmic.

    The Combined Maze May Sinclair
  • At once it seemed as if some cataclysmic upheaval were in progress.

    Kings in Exile

    Sir Charles George Douglas Roberts
  • They told of an elemental tragedy, swift and cataclysmic in its action.

    The Gilded Man Clifford Smyth
Word Origin and History for cataclysmic
adj.

1837, from cataclysm + -ic. Related: Cataclysmical (1857); cataclysmically.

Online Etymology Dictionary, © 2010 Douglas Harper
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