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.
Hitler had inflicted countless economic wounds on his country over his five years as chancellor, and this foray into the Arctic was part of a broader effort to remedy one of them. Timothy W. Ryback, The Atlantic, 19 Feb. 2026 Last January my mother was diagnosed with terminal lung cancer then suffered countless ischemic strokes the day before her first chemotherapy session. Literary Hub, 19 Feb. 2026 The region — spread across 14 counties, countless suburbs and 8,472 square miles — is the antithesis of other World Cup markets, such as New York. Henry Bushnell, New York Times, 19 Feb. 2026 The Real Housewives of Beverly Hills alum initially believed that the bug, which eluded detection and caused countless medical issues, wormed its way into her system while filming Bravo's The Real Housewives Ultimate Girls Trip in Morocco in early 2023. Ryan Coleman, Entertainment Weekly, 19 Feb. 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 26 Feb. 2026.

Kids Definition

countless

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

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