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.
I remember standing on the sidelines on countless weekend mornings watching my children play youth soccer.
From The Wall Street Journal • Jun. 19, 2026
"I have received countless messages from Massachusetts residents, Scotland supporters, legal experts, and at least one very concerned sheep," she wrote.
From BBC • Jun. 18, 2026
He said there were countless videos featuring the AI-generated figures with Down syndrome and said the same accounts had been trying to sell identical products using elderly synthetic characters.
From Barron's • Jun. 18, 2026
The position was easy enough — I’d done it countless times on dry land.
From Los Angeles Times • Jun. 15, 2026
The Mona Lisa had been gone for years, and during that period, countless people had claimed to have the painting.
From "The Mona Lisa Vanishes" by Nicholas Day
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.
