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.
Despite this, the United States observes that the text of this resolution remains highly problematic in countless respects. Washington Examiner Staff, The Washington Examiner, 26 Mar. 2026 The video blew up on Chinese social media, becoming a top trending topic and reaching more than 90 million views on Douyin and Weibo, two major platforms – with the video quickly spawning countless memes and group-chat discussions. Jessie Yeung, CNN Money, 26 Mar. 2026 The UConn men and women have created countless memories through the madness of March and onto the championships won in April. Kels Dayton, Hartford Courant, 26 Mar. 2026 Samara Martínez has written countless letters to the illness that weakens her body. ABC News, 26 Mar. 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

Cite this Entry

“Countless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/countless. Accessed 30 Mar. 2026.

Kids Definition

countless

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

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