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.
Not Researching Your Variety Roses are one of the world's largest plant groups with hundreds of species, thousands of cultivars and varieties, and countless relatives, says Adrienne Roethling, head gardener for a private estate. Madeline Buiano, Martha Stewart, 5 July 2026 In addition to Stone, countless stars were in attendance, including Jessica Alba, Jennifer Lopez, Lena Dunham, Reese Witherspoon, Zoe Kravitz, Gigi Hadid, Karli Kloss, and Selena Gomez. Robyn Merrett, InStyle, 5 July 2026 With key decisions still ahead, the Nashville Zoo and its supporters continue their efforts to help the clouded leopard — and countless other species — thrive. Julianna Bragg, CNN Money, 5 July 2026 Professional sports have provided countless athletes with platforms to invest in charities, mentor youth, rebuild neighborhoods, and support military families, first responders, and disaster relief efforts. Jon Root Outkick, FOXNews.com, 4 July 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 6 Jul. 2026.

Kids Definition

countless

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

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