All Fools' Day

noun

: April 1 characteristically marked by the playing of practical jokes : april fools' day

Word History

First Known Use

1702, in the meaning defined above

Time Traveler
The first known use of All Fools' Day was in 1702

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all fives
All Fools' Day
all for
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Cite this Entry

“All Fools' Day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/All%20Fools%27%20Day. Accessed 26 Aug. 2026.

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Kids Definition

All Fools' Day

noun
: april fools' day

More from Merriam-Webster on All Fools' Day

Britannica.com: Encyclopedia article about All Fools' Day

Last Updated: - Definition revised
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