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
The hype cycle has careened straight into doomsday-prepper territory where the voices are loud, alarmist, and largely missing the plot.
—
Alexander Puutio, Forbes.com, 17 Sep. 2025
The former doomsday cult leader is able to get his letters out to the world with the help of his daughter, Emma Murray.
—Kc Baker, PEOPLE, 17 Sep. 2025
From artificial life to vacuum collapse, this is the story of science’s recurring doomsday visions.
—Thomas Moynihan, Big Think, 15 Sep. 2025
The fear lingers because black holes are spooky and the machine is enormous, but the science and the decade-plus of safe running don’t support doomsday.
—Kaif Shaikh, Interesting Engineering, 4 Sep. 2025
See All Example Sentences for doomsday
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Alexander Puutio, Forbes.com, 17 Sep. 2025
The former doomsday cult leader is able to get his letters out to the world with the help of his daughter, Emma Murray.
—Kc Baker, PEOPLE, 17 Sep. 2025
From artificial life to vacuum collapse, this is the story of science’s recurring doomsday visions.
—Thomas Moynihan, Big Think, 15 Sep. 2025
The fear lingers because black holes are spooky and the machine is enormous, but the science and the decade-plus of safe running don’t support doomsday.
—Kaif Shaikh, Interesting Engineering, 4 Sep. 2025
See All Example Sentences for doomsday
Cite this Entry
“Doomsday.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/doomsday. Accessed 20 Sep. 2025.
Copy CitationKids Definition
doomsday
noun
dooms·day
ˈdümz-ˌdā 
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