doomsday

noun

dooms·​day ˈdümz-ˌdā How to pronounce doomsday (audio)
often attributive
1
: a day of final judgment
2
: a time of catastrophic destruction and death

Examples of doomsday in a Sentence

a warning that doomsday is near The book explores a doomsday scenario in which an asteroid hits the Earth.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Last month, new reporting suggested the co-founder of OpenAI reportedly wanted to build a doomsday bunker to protect top AI researchers. Jason Hausenloy, The Orlando Sentinel, 19 July 2025 Also read: Commanders Veteran Cites Area of Emphasis to Compete With Eagles After having weeks to work out a new contract, the Commanders have officially reached a doomsday scenario. Kevin McCormick, MSNBC Newsweek, 17 July 2025 Would Russia’s 2022 invasion still have occurred against a Ukraine bristling with doomsday weapons? The Editorial Board, Chicago Tribune, 14 July 2025 But Oppenheimer is a talky period piece, an exploration of a man and his mind, with only a flash-forward warning about doomsday tacked on to the ending. Tom Nichols, The Atlantic, 10 July 2025 See All Example Sentences for doomsday

Word History

First Known Use

before the 12th century, in the meaning defined at sense 1

Time Traveler
The first known use of doomsday was before the 12th century

Browse Nearby Words

Cite this Entry

“Doomsday.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/doomsday. Accessed 29 Jul. 2025.

Kids Definition

doomsday

noun
dooms·​day ˈdümz-ˌdā How to pronounce doomsday (audio)

More from Merriam-Webster on doomsday

Last Updated: - Updated example sentences
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