hilarity
Americannoun
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cheerfulness; merriment; mirthfulness.
-
boisterous gaiety or merriment.
noun
Synonym Usage
See mirth.
Other Word Forms
Etymology
Origin of hilarity
1560–70; earlier hilaritie, from Latin hilaritās, equivalent to hilari(s) ( see hilarious) + -tās -ty 2
Explanation
Hilarity is that side-splitting, tear-inducing, laugh-until-you-can't-breathe happiness of a romping good time. There's usually an atmosphere of hilarity just after the ball drops on New Year's Eve. It's that feeling of cheerfulness — hilaritas in Latin — that fills the room when the clock strikes midnight. If your teacher passes out cupcakes and lets you play games instead of reading aloud, she may have a hard time controlling the ensuing hilarity in the classroom.
Vocabulary lists containing hilarity
The London Eye Mystery
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Vocabulary Video Contest (2013) - List 1
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Bill Parcells' Hall of Fame Induction Speech
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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.
Christopher Nolan’s epic ‘The Odyssey’ hits theaters, ‘Stuart Fails to Save the Universe’ delivers interdimensional hilarity, Tom Hiddleston explores Pompeii, and much, much more.
From The Wall Street Journal ● Jul. 31, 2026
So leaning into drama enables you to lean into the hilarity or the quirkiness or awkwardness of humor.
From Los Angeles Times ● May 26, 2026
In recent years, creator Bill Lawrence has struck chords with emotional, warm-hearted hits like “Ted Lasso” and “Shrinking,” but this is where his blend of heart and hilarity really came together.
From MarketWatch ● Jan. 30, 2026
The prime minister made the juggling hand gesture that accompanies the reference, prompting class-wide hilarity.
From BBC ● Nov. 25, 2025
Ron, who might once have found the necessity of these detours a cause for jealousy rather than hilarity, simply roared with laughter about it all.
From "Harry Potter and the Half-Blood Prince" by J.K. Rowling
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.
