countless
Americanadjective
adjective
Other Word Forms
Etymology
Origin of countless
Explanation
Countless means more than you could possibly count. If you have countless reasons why you love living in New York, there are so many reasons that you can't list them all. Countless is a good adjective to use when you want to emphasize how endless, huge, or immeasurable something is. Your could say that smoke detectors save countless lives each year, or that your principal has tried countless times to ban soda at school, only to be outvoted by the student council over and over. The word dates from the 16th century, from the verb count, with its Old French root, conter, "add up."
Vocabulary lists containing countless
Much Ado: Synonyms for "Many"
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Talk Like Shakespeare Day, List 6
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"Dogs at Work"
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
At book signings and on barstools, she sought their stories, sometimes re-telling them in her essays and on her countless speaking tours.
From Los Angeles Times ● Sep. 3, 2026
Critics say direct admission muddies an already-confusing process with countless invitations.
From The Wall Street Journal ● Sep. 3, 2026
She did this countless times across her decades of unwavering support for the queer community, softening and sharpening her humor according to the severity of whatever topic she waded into.
From Salon ● Aug. 28, 2026
And it was not until the 1990s that her vivid patterns, bold floral shapes and shiny steel orbs hit the mainstream, later providing the backdrop to countless selfies.
From Barron's ● Aug. 27, 2026
I’d felt a bit like Noah as I studied the countless boulders scattered across my claim.
From "Hattie Big Sky" by Kirby Larson
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
