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.
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.
Each time a shutter fires, and each time a tire squeals, involves countless pieces working together to deliver a smooth outcome. — Catherina Gioino, Fortune, 21 Oct. 2026 The bullet shattered his femur and left countless bullet fragments that surgeons were unable to remove. — Isaac Chotiner, New Yorker, 19 Oct. 2026 The event was attended by Mitte’s countless family and friends, as well as many professional peers. — Jon Blistein, Rolling Stone, 19 Oct. 2026 The Brazilian model’s gorgeousness helped sell countless bras, her beauty not only meeting the highest of prevailing standards but arguably moving the goalpost in an even harder-to-reach direction. — Marci Robin, Allure, 18 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 21 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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