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.
By combining the Cardinals’ spirit with an urgent public health mission, Wainwright and Sierra Kile hope to ensure that Darryl Kile’s legacy continues to inspire not just on the field, but in the lives of countless fans who cheer from the stands. Andy Frye, Forbes.com, 17 Sep. 2025 Baltimore is the birthplace of Thurgood Marshall, the first Black Supreme Court Justice, and home to countless other civil rights leaders who deserve more shine. Shelby Stewart, Essence, 17 Sep. 2025 In a 2014 interview conducted by oral historian Teri Finneman, Hagerty said the response to her review was unbelievable, including countless emails and phone calls as well as TV interviews and a tour of New York City. Dave Smith, Fortune, 17 Sep. 2025 Her pathbreaking work opened the door for countless women writers and producers in primetime television, especially those who used the sitcom to explore the joys and challenges of womanhood. Time, 17 Sep. 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

Browse Nearby Words

Cite this Entry

“Countless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/countless. Accessed 19 Sep. 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
Love words? Need even more definitions?

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