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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That savvy turned to genius when Joe starting serving stone crabs there in 1921, turning his namesake restaurant into a century-old global phenomenon.—
Howard Cohen,
Miami Herald,
1 Feb. 2026
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The lasagna roll-up is a genius approach to uniform serving sizes.—
Alana Al-Hatlani,
Southern Living,
31 Jan. 2026
Noun
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The family rocked a Harry Potter group costume on Halloween in 2021, which saw Biel dressed as Professor McGonagall, Timberlake as Dumbledore, Silas as Potter and baby Phineas as Hedwig, the young wizard's pet owl.—
Andrea Wurzburger,
PEOPLE,
31 Jan. 2026
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Only the best of the bat-to-ball wizards can build a career in the majors.—
Grant Brisbee,
New York Times,
27 Jan. 2026
Noun
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Many of the most popular sports pundits cast off analytics as superfluous nerd drivel.—
Brady Brickner-Wood,
New Yorker,
28 Jan. 2026
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The instruction book also features a bunch of cool facts and history about the SLS — a wonderful touch for a NASA nerd like me.—
Ian Stokes,
Space.com,
28 Jan. 2026
Noun
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According to Kwabena Boahen, a Professor of Bioengineering and Electrical Engineering at Stanford University, the human brain offers a potential solution to this problem.—
Matthew S Williams,
Interesting Engineering,
5 Feb. 2026
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Continue reading … ANTI-AGING SECRET – One particular lifestyle activity keeps brains sharp.—
,
FOXNews.com,
4 Feb. 2026
Cite this Entry
“Brainiac.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/brainiac. Accessed 5 Feb. 2026.
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