brainstorm
Americannoun
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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:
Pastors across America are increasingly turning to chatbots to brainstorm, research and help write sermons.
From The Wall Street Journal ● Jul. 19, 2026
I find it helpful to brainstorm a week’s worth of meal ideas that call for rotisserie chicken in preparation for bringing a whole bird home.
From Salon ● Jun. 29, 2026
Spiegel says they brainstorm ideas for actors and themes based on what’s in the zeitgeist, tying the stories to specific moments in pop culture, then sprinkling in some evergreen stories throughout the year.
From Los Angeles Times ● Jun. 16, 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
“Are you having a brainstorm or do you just really, really like chocolate chip cookie dough ice cream?”
From "The Smartest Kid in the Universe" by Chris Grabenstein
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The world will be a better place when statesmen and their cronies routinely submit their strategic brainstorms to an LLM, free of wishful thinking or tunnel vision.
From The Wall Street Journal ● Jun. 15, 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.