madness
Americannoun
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the state of being mad; insanity.
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senseless folly.
It is sheer madness to speak as you do.
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frenzy; rage.
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intense excitement or enthusiasm.
noun
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insanity; lunacy
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extreme anger, excitement, or foolishness
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a nontechnical word for rabies
Other Word Forms
Etymology
Origin of madness
First recorded in 1350–1400, madness is from the Middle English word madnesse. See mad, -ness
Explanation
Madness is foolish, impulsive behavior. It would be madness to ride on the back of your friend's car, standing on the bumper. A screaming crowd waiting to see their favorite rock star creates an atmosphere of madness — and their enthusiasm itself can be described as madness. You could also say that donating all your money to an animal shelter would be madness, or describe the madness of a busy Thanksgiving Day sale. Madness sometimes takes on its original meaning, "mental instability" or "insanity."
Vocabulary lists containing madness
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.
Authorities at the time caused "daily madness for everyone," said Suely Araujo of the Climate Observatory NGO.
From Barron's ● Oct. 15, 2026
This was a moment where I had to ignore the “reasonable” voices and knock on the door of madness: $300,000.
From The Wall Street Journal ● Sep. 24, 2026
With AI images bleeding into the real world at a pace none of us can keep up with, there’s human marvel to behold in Anderson’s madness.
From Salon ● Sep. 23, 2026
Keitel’s Feraud keeps provoking the feud; Carradine’s D’Hubert recognizes its madness but remains too bound by the same code of honor to walk away.
From Los Angeles Times ● Aug. 20, 2026
On the face of it, it sounded like madness.
From "The River" by Gary Paulsen
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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.
