countless

adjective

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

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.
The area has since transformed into a contemporary cultural hub, home to the University of Tasmania’s Art School and countless galleries lined with cafés, restaurants, and bars. Condé Nast, Condé Nast Traveler, 27 May 2026 They’ve been referenced in countless speeches and essays. Literary Hub, 26 May 2026 In downtown, offices sit empty and countless retail storefronts are boarded up. Mercury News Editorial Board, Mercury News, 26 May 2026 When countless numbers of these spins interact within a solid material, stable and intricate patterns naturally emerge. Mrigakshi Dixit, Interesting Engineering, 26 May 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

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Cite this Entry

“Countless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/countless. Accessed 28 May. 2026.

Kids Definition

countless

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

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