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 something rare about Swain, who is a young brainiac, but one who has built his business the old-fashioned, pre-quant-trading and Excel models Wall Street way, via charm offensives that weave webs of tight relationships few rivals can match.
—
Shawn Tully, Fortune, 1 Nov. 2025
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
See All Example Sentences for brainiac
Shawn Tully, Fortune, 1 Nov. 2025
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
See All Example Sentences for brainiac
Recent Examples of Synonyms for brainiac
Noun
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Three years ago, this selection might have looked like genius.—
Troy Renck,
Denver Post,
25 Apr. 2026
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The Spurs’ two youngest players made their coach look like a genius.—
Jeff McDonald,
San Antonio Express-News,
25 Apr. 2026
Noun
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That won't mean much to most gamers or even most PC enthusiasts, but for memory-tuning wizards like 1usmus, more levers to pull in overclocking and timing adjustments may make more capable memory overclocks possible in the future.—
Jon Martindale,
PC Magazine,
24 Apr. 2026
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Get ready for witches, munchkins and even the wizard.—
Stacey Zable,
USA Today,
23 Apr. 2026
Noun
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But singer-guitarist Dan Auerbach and drummer Patrick Carney’s 14th album leans into their back-to-basics side with a collection of tunes by other artists, inspired by these lifelong friends’ shared journey as deep record nerds.—
Jon Dolan,
Rolling Stone,
29 Apr. 2026
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While baseball nerds are busy playing with their analytics, those of us who miss balls to the wall baseball are reminded today that it's been 43 years since Chicago Cubs' Lee Elia let loose with one of the greatest, if not THE greatest, managerial rants in the history of sports.—
Joe Kinsey OutKick,
FOXNews.com,
29 Apr. 2026
Noun
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Hall had a 1% chance of survival when he was born four months premature at just 23 weeks gestation, born without a heartbeat and suffering from a brain bleed.—
Jackson Thompson OutKick,
FOXNews.com,
30 Apr. 2026
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Hernandez, whose death was ruled a suicide, was later determined to have had CTE and early brain atrophy.—
Los Angeles Times,
Los Angeles Times,
29 Apr. 2026
Cite this Entry
“Brainiac.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/brainiac. Accessed 2 May. 2026.
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