as in genius
a very smart person
a techie who always has to have the latest gadget that the brainiacs in Silicon Valley have cooked up
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Recent Examples of brainiac
There’s no way of knowing who’s the brainiac in the Swift brood, but one Norwegian study showed the oldest child has an IQ that averages three points higher than that of the second oldest, while the second child, in turn, is one point smarter than the third.
—
Jeffrey Kluger, Time, 3 Oct. 2025
In addition to the Ivy League brainiacs, Chen employs an army of a million-plus gig workers from more than 50 countries around the world who help come up with questions that might stump AI, evaluating the models’ responses and writing criteria that help AI generate a perfect response.
—Danielle Chemtob, Forbes.com, 17 Sep. 2025
Both are wicked smart brainiacs on a tireless quest to do good in the world.
—Natasha Stoynoff, PEOPLE, 7 Sep. 2025
The two brainiacs representing Colorado at the Scripps National Spelling Bee outside Washington, D.C., this week advanced through the first three rounds of the competition Tuesday.
—Elizabeth Hernandez, Denver Post, 28 May 2025
See All Example Sentences for brainiac
Jeffrey Kluger, Time, 3 Oct. 2025
In addition to the Ivy League brainiacs, Chen employs an army of a million-plus gig workers from more than 50 countries around the world who help come up with questions that might stump AI, evaluating the models’ responses and writing criteria that help AI generate a perfect response.
—Danielle Chemtob, Forbes.com, 17 Sep. 2025
Both are wicked smart brainiacs on a tireless quest to do good in the world.
—Natasha Stoynoff, PEOPLE, 7 Sep. 2025
The two brainiacs representing Colorado at the Scripps National Spelling Bee outside Washington, D.C., this week advanced through the first three rounds of the competition Tuesday.
—Elizabeth Hernandez, Denver Post, 28 May 2025
See All Example Sentences for brainiac
Recent Examples of Synonyms for brainiac
Noun
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Think space-saving packing solutions, genius tech that keeps your devices alive when outlets are scarce, and comfort items that make economy feel a little more bearable.—
Chaise Sanders,
Travel + Leisure,
22 Feb. 2026
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Here are seven genius ways to use your iron around the house.—
Kate Donovan,
Martha Stewart,
21 Feb. 2026
Noun
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There was David Gamson, a 24-year-old electronics wizard and composer-in-training who helped to shape Cupid and Psyche 85’s extravagant layers of sampled and synthesized sound, a tapestry of iridescent edges whose startling complexity was inspired in part by his interest in classical counterpoint.—
Andy Cush,
Pitchfork,
15 Feb. 2026
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For years, defensive coordinator Steve Spagnuolo has been a wizard at designing blitzes that fool quarterbacks.—
Sam McDowell
February 5,
Kansas City Star,
5 Feb. 2026
Noun
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At risk of belaboring the Wallacaissaince, this is an especially fun conversation for structure nerds and systems heads.—
Brittany Allen,
Literary Hub,
19 Feb. 2026
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An array of charts buried in the fine print of the state budget, unknown to all but a few fiscal nerds, details what California has collected in revenues and spent over the last half-century.—
Dan Walters,
Mercury News,
17 Feb. 2026
Noun
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Alfredo, 41, and Kelly Muñoz, 34, were arrested on suspicion of murder and torture in November after Tilly was rushed to the hospital with a severe brain injury.—
Rebecca Ellis,
Los Angeles Times,
26 Feb. 2026
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Tuesday, the baby was airlifted to Loyola University Medical Center with skull fractures and hemorrhaging in his brain, police said, and placed on life support.—
CBS Chicago Team,
CBS News,
25 Feb. 2026
Cite this Entry
“Brainiac.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/brainiac. Accessed 28 Feb. 2026.
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