countless

adjective

count·​less ˈkau̇nt-ləs How to pronounce countless (audio)
: 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.
Like countless other Swifties across the world, the Public Enemy rapper is celebrating the beginning of August in Taylor Swift style, posting one of her lyrics on his X account Friday (Aug. 1). Hannah Dailey, Billboard, 1 Aug. 2025 The genus Salvia is incredibly diverse, with dozens of species and countless cultivars well suited to life in the garden. Kim Toscano, Southern Living, 31 July 2025 The pain persists, shaping countless lives for years to come. Graciela Mochkofsky, New Yorker, 31 July 2025 Once inside, the slightly-dim lighting bounces off of vintage-looking floral wallpaper, which has likely been the backdrop for countless Instagram photos. Amanda Hancock, The Courier-Journal, 31 July 2025 See All Example Sentences for countless

Word History

First Known Use

1588, in the meaning defined above

Time Traveler
The first known use of countless was in 1588

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Cite this Entry

“Countless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/countless. Accessed 8 Aug. 2025.

Kids Definition

countless

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

More from Merriam-Webster on countless

Last Updated: - Updated example sentences
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