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doomsday

American  
[doomz-dey] / ˈdumzˌdeɪ /

noun

  1. Theology. the day of the Last Judgment, at the end of the world.

  2. any day of judgment or sentence.

  3. nuclear destruction of the world.


adjective

  1. given to or marked by forebodings or predictions of impending calamity; especially concerned with or predicting future universal destruction.

    the doomsday issue of all-out nuclear war.

  2. capable of causing widespread or total destruction.

    doomsday weapons.

doomsday British  
/ ˈduːmzˌdeɪ /

noun

  1. (sometimes capital) the day on which the Last Judgment will occur

  2. any day of reckoning

  3. (modifier) characterized by predictions of disaster

    doomsday scenario

"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

Etymology

Origin of doomsday

First recorded before 1000; Middle English domes dai, Old English dōmesdæg “Judgment Day”; equivalent to doom ( def. ) + 's 1 ( def. ) + day ( def. )

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 was a welcome break from the doomsday scenarios and panic that has gripped stocks in recent days.

From Barron's

While Kutler can point to ratings increases, she is aware of the long-term doomsday scenario that faces the cable TV industry as more viewers turn to streaming.

From Los Angeles Times

On Monday, over $200 billion of market capitalization was wiped out of software stocks as the market reacted to a hypothetical artificial-intelligence doomsday scenario.

From MarketWatch

“We are not quite in the doomsday scenario, but we have to be on watch, as these technologies are evolving pretty quickly.”

From MarketWatch

A doomsday note by Citrini Research setting out a futuristic scenario along with Anthropic’s updates were enough on Monday as the S&P 500 fell 1%.

From Barron's