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.
Across social media and news stories, there are countless eulogies that spotlight his humility, integrity and vision. Orlando Sentinel Editorial Board, The Orlando Sentinel, 28 Apr. 2026 That, among countless other stats, clips and testimonials, is how good Pavia was leading Clark Lea’s team and running Tim Beck’s offense. Joe Rexrode, New York Times, 27 Apr. 2026 But there are countless other questions that remain unanswered, including for instance, whether conversations with a chatbot psychiatrist, doctor, or travel adviser are protected from disclosure. Nina Totenberg, NPR, 27 Apr. 2026 Three trips to Chicago, countless crates and about a year-and-a-half of nonstop listening later, Feldman has curated four double- and triple-LP sets gleaned from live Showcase performances in the 1970s. Hannah Edgar, Chicago Tribune, 27 Apr. 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 1 May. 2026.

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster