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
- brainstormer noun
Etymology
Origin of brainstorm
First recorded in 1890–95; brain + storm; originally a manifestation of a serious psychiatric disorder
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.
At their monthly lunches, Baxter notes that he and Sotto would continue to brainstorm new Disney attractions or alternative directions to what the company was announcing.
From Los Angeles Times • Dec. 22, 2025
Allan Binder, a teacher and sound engineer currently based in Hanoi, Vietnam, said he started using AI last year to brainstorm gift ideas for friends and family in the US.
From BBC • Dec. 9, 2025
To help you brainstorm, Barron’s ran a stock screen via FactSet and looked for companies with large market capitalizations in three classically defensive sectors—consumer staples, utilities, and healthcare—that also boast solid earnings and dividends.
From Barron's • Nov. 8, 2025
With Barberis guiding the discussion, Webb and his family spent a few hours talking about what was important to them to brainstorm their mission statement.
From The Wall Street Journal • Oct. 19, 2025
“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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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.