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
-
His piece of genius separated the sides entering the 84th minute but during a chaotic finale, the hosts conspired to grab defeat from the jaws of victory.—
James Pearce,
New York Times,
9 Feb. 2026
-
Sliced bread, the wheel, the wrap dress—some genius was responsible for all of them.—
Tamim Alnuweiri,
InStyle,
8 Feb. 2026
Noun
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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
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That was until April 2016, when Universal Studios Hollywood unveiled its own 200-foot-tall Hogwarts castle inspired by the beloved wizard.—
Kailyn Brown,
Los Angeles Times,
3 Feb. 2026
Noun
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It was acquired by Brown-Forman in 1936 and promptly ruined by the company, according to today’s whiskey nerd standards, a few years later when it was turned into a blended whiskey (a category that was more popular at the time, and cheaper to make).—
Jonah Flicker,
Robb Report,
4 Feb. 2026
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Advertisement Especially for comedy nerds, the behind-the-scenes anecdotes about working with legends like Richard Pryor and Gene Wilder might be familiar.—
Judy Berman,
Time,
30 Jan. 2026
Noun
-
Instead of analyzing every detail in a scene, the human brain quickly detects sudden motion or change and reacts first.—
Sujita Sinha,
Interesting Engineering,
11 Feb. 2026
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Fiber slows digestion, preventing sharp glucose spikes while delivering antioxidants that protect brain cells.—
Deirdre Bardolf,
FOXNews.com,
11 Feb. 2026
Cite this Entry
“Brainiac.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/brainiac. Accessed 15 Feb. 2026.
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