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.
This bedroom also includes a sizable walk-in closet that’s equipped with countless storage and organizational solutions.
From MarketWatch ● Nov. 4, 2026
Parisi Presicce said that "countless questions" remain about the compelling portraits.
From Barron's ● Nov. 3, 2026
A fan of the band since her teenage years, she was in disbelief stepping into a location she’d seen countless times on screen.
From Los Angeles Times ● Oct. 27, 2026
That catastrophic event eliminated the non-avian dinosaurs along with countless other animal and plant species.
From Science Daily ● Oct. 26, 2026
I ran countless brown envelopes around the grounds of the mansion today and saw the most curious things.
From "The Bletchley Riddle" by Ruta Sepetys and Steve Sheinkin
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Get a wordDefinitions 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.
