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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

Related Words

See disaster.

Other Word 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.

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

From BBC • May 15, 2026

If Spielberg’s earlier UFO movies gave us awe, comfort and catastrophe, this one feels like an encounter of a fourth kind: What happens when the cover story breaks?

From Los Angeles Times • May 14, 2026

As more discoveries accumulate, many scientists now believe humans were far more adaptable than the original Toba catastrophe hypothesis suggested.

From Science Daily • May 11, 2026

Presidents from Harry Truman to Lyndon Johnson were forced to see that Jim Crow was not just a moral catastrophe but a geopolitical liability.

From Salon • May 5, 2026

It was by far the most brazen thing Hitler had yet attempted, his biggest gamble, and a major step toward the catastrophe that was soon to envelop the world.

From "The Boys in the Boat: Nine Americans and Their Epic Quest for Gold at the 1936 Berlin Olympics" by Daniel James Brown

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