countless

adjective

count·​less ˈkau̇nt-ləs How to pronounce countless (audio)
Synonyms of countlessnext
: too numerous to be counted : myriad, many
countlessly adverb

Synonyms of countless

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Examples of countless in a Sentence

There are countless reasons why that would not be a good idea. I've been there countless times.
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That malfunction saved countless lives, including those of my own family. — Raja Krishnamoorthi, Chicago Tribune, 28 Oct. 2026 One source described it as featuring authentic human stories of everyone involved in the tour, from the singer and his fans to the countless others behind the scenes. — Steven J. Horowitz, Variety, 26 Oct. 2026 The deep-space image reveals a 230-light-year-wide swathe of the glowing emission nebula N159, threaded with denser filaments of reddish molecular hydrogen that hide countless energetic young stars. — Anthony Wood, Space.com, 26 Oct. 2026 The idea shows up in mythology—from Zeus transforming into every kind of animal to commit adultery to Psyche being warned that her new husband, Eros, would be grotesque—as well as in folklore and countless retellings of Beauty and the Beast. — Janelle Okwodu, Vogue, 26 Oct. 2026 See All Example Sentences for countless

Word History

First Known Use

1593, in the meaning defined above

Time Traveler
The first known use of countless was in 1593

Browse Nearby Words

counting tube
countless
count noun
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Cite this Entry

“Countless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/countless. Accessed 29 Oct. 2026.

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Kids Definition

countless

adjective
count·​less ˈkau̇nt-ləs How to pronounce countless (audio)
: too numerous to be counted : innumerable
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