brainstorm
Americannoun
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brainstorms
plural
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a sudden impulse, idea, etc..
Her most recent brainstorm of teaching her dog to surf wasn’t met with much enthusiasm from the dog.
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Chiefly British Informal. a fit of mental confusion or excitement.
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a session of brainstorming.
adjective
verb (used without object)
verb (used with object)
noun
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a severe outburst of excitement, often as the result of a transitory disturbance of cerebral activity
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informal a sudden mental aberration
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informal another word for brainwave
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of brainstorm
First recorded in 1890–95; brain + storm; originally a manifestation of a serious psychiatric disorder
Explanation
As you would expect, the word brainstorm involves thought. A brainstorm can be an "Aha!" moment, while brainstorming is the process of trying to think of ideas. If you've ever needed to find a topic for a paper and have just started listing every idea coming to you, you know what it's like to brainstorm. People brainstorm when they need a new idea. You can also say you had a brainstorm when a good idea or solution occurs to you. Often, this kind of brainstorm happens when you're not even working on the problem. For example, a scientist might have a brainstorm for a new project in the shower.
Vocabulary lists containing brainstorm
Jim Burke's Academic Vocabulary List
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TEKS ELAR Academic Vocabulary List (5th-7th grades)
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Expository Writing, List 1
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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.
See Examples For:
They didn’t get to figure out that they wanted a horn section or brainstorm on what visuals, lighting and pyrotechnics would add to their show.
From Salon ● Jun. 23, 2026
Some creatives say the AI tools help them brainstorm or illustrate bold ideas on a budget.
From Los Angeles Times ● Jun. 8, 2026
Jack Hsieh, chief executive of mall owner Macerich, recently formed a committee to study Gen Z spending and brainstorm ways for the mall to draw more of the generation to its centers.
From The Wall Street Journal ● May 13, 2026
"I did my research and then started to kind of brainstorm what those ideas could be and how I could integrate my own musicality into the pre-existing world of Devil Wears Prada."
From BBC ● May 1, 2026
I had a brainstorm and tapped out on my board, “Go in. Get card, please.”
From "Out of My Mind" by Sharon M. Draper
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Here are some of the brainstorms they wished for.
From The Wall Street Journal ● Jun. 29, 2026
But not all of Marlon’s brainstorms were so outré, and here is the Brando’s principal innovative success.
From Los Angeles Times ● Mar. 20, 2024
Researchers are just beginning to test some of the ideas generated by these brainstorms.
From Scientific American ● Jul. 18, 2023
The stagy devices give the impression of notions that may have seemed like brainstorms in rehearsal but in performance feel overly artificial.
From Washington Post ● Mar. 1, 2023
I picture Grandma weaving the threads together, humming and chuckling while she brainstorms the next mind-bending story she’s going to tell me about Ghana.
From "Kwame Crashes the Underworld" by Craig Kofi Farmer
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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.