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catastrophe

American  
[kuh-tas-truh-fee] / kəˈtæs trə fi /

noun

catastrophes plural
  1. a sudden and widespread disaster.

    the catastrophe of war.

    Synonyms:
    calamity, misfortune
    Antonyms:
    triumph
  2. any misfortune, mishap, or failure; fiasco.

    The play was so poor our whole evening was a catastrophe.

  3. a final event or conclusion, usually an unfortunate one; a disastrous end.

    the great catastrophe of the Old South at Appomattox.

    Antonyms:
    triumph
  4. (in a drama) the point at which the circumstances overcome the central motive, introducing the close or conclusion; dénouement.

  5. Geology. a sudden, violent disturbance, especially of a part of the surface of the earth; cataclysm.

  6. Also called catastrophe functionMathematics. any of the mathematical functions that describe the discontinuities that are treated in catastrophe theory.


catastrophe British  
/ kəˈtæstrəfɪ, ˌkætəˈstrɒfɪk /

noun

  1. a sudden, extensive, or notable disaster or misfortune

  2. the denouement of a play, esp a classical tragedy

  3. a final decisive event, usually causing a disastrous end

  4. Also called: cataclysm.  any sudden and violent change in the earth's surface caused by flooding, earthquake, or some other rapid process

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Synonym Usage

See disaster.

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of catastrophe

First recorded in 1570–80; from Greek katastrophḗ “an overturning,” from katastréphein “to overturn”; equivalent to cata- + strophe

Explanation

A catastrophe is a disaster. If a wedding reception is disrupted by a fistfight between the bride and her new mother-in-law, you could call the occasion a catastrophe. Catastrophe comes from a Greek word meaning "overturn." It originally referred to the disastrous finish of a drama, usually a tragedy. The definition was extended to mean "any sudden disaster" in the 1700s. Nowadays, catastrophe can be used to refer to very tragic events as well as more minor ones. A hurricane destroying hundreds of homes is certainly a catastrophe; baking a birthday cake without following a recipe might also result in catastrophe, if you don't know anything about cooking.

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Vocabulary lists containing catastrophe

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

This is not the work of a justice indifferent to slavery or unmoved by the constitutional catastrophe of Dred Scott.

From Slate • Jul. 2, 2026

"If spare parts, filters and new generators are not allowed in, we are heading towards a catastrophe," he told the BBC.

From BBC • Jul. 2, 2026

From Fort Lee, across the Hudson, Gen. George Washington watched the catastrophe in agony.

From The Wall Street Journal • Jun. 29, 2026

The scope of the catastrophe quickly overwhelmed a country of 28 million battered by years of economic crisis and political tumult.

From Los Angeles Times • Jun. 26, 2026

In other words, the night is a catastrophe.

From "Odd One Out" by Nic Stone

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