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catastrophe

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

noun

  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

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.

As Ebola spread across West Africa in September 2014, the world was on the brink of catastrophe.

From The Wall Street Journal • Jun. 2, 2026

"I think I woke up about five o'clock in the morning... I quickly called my mum, and she said they were all good. The catastrophe hadn't quite hit then," she said.

From BBC • May 30, 2026

The suspected failure of a cooling system, and the introduction of heat to a pressurized tank with MMA, planted the seeds of a potential catastrophe.

From Los Angeles Times • May 27, 2026

"It's a catastrophe for me because I hate being silent!" she posted on social media.

From BBC • May 15, 2026

Indeed, the coming age of cultural change - including new trends in music - was ushered in by a widely held belief that the world was on the brink of catastrophe.

From "The Story of Music" by Howard Goodall

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