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
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
Example Sentences
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Recent Examples of brainiac
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
The Scooby gang needs its brainiac (who also knows how to rock a mod pair of specs).
—Maureen Lee Lenker, EW.com, 28 Mar. 2025
Because bonobos are brainiacs, pinpointing the cup with the treat should have been no sweat.
—Jack Tamisiea, Scientific American, 3 Feb. 2025
Hollis enrolled him at Terra Environmental Research Institute, a magnet school for science, tech and engineering brainiacs.
—Carol Marbin Miller, Miami Herald, 2 Jan. 2025
See All Example Sentences for brainiac
Elizabeth Hernandez, Denver Post, 28 May 2025
The Scooby gang needs its brainiac (who also knows how to rock a mod pair of specs).
—Maureen Lee Lenker, EW.com, 28 Mar. 2025
Because bonobos are brainiacs, pinpointing the cup with the treat should have been no sweat.
—Jack Tamisiea, Scientific American, 3 Feb. 2025
Hollis enrolled him at Terra Environmental Research Institute, a magnet school for science, tech and engineering brainiacs.
—Carol Marbin Miller, Miami Herald, 2 Jan. 2025
See All Example Sentences for brainiac
Recent Examples of Synonyms for brainiac
Noun
-
How did the offensive genius finally figure out how to run the ball?—
Dieter Kurtenbach,
Mercury News,
20 Oct. 2025
-
By then, the preeminent fashion genius of the third quarter of the 20th century and the designer so often credited with inventing the modern woman’s wardrobe had handed prêt-à-porter over to his assistants, who clung as if by commandment to the house dogma of bourgeois Parisian elegance.—
Rob Haskell,
Vogue,
20 Oct. 2025
Noun
-
Believing that Tesla built Alfred’s Transporter machine, Robert hopes the wizard can build a similar contraption for him.—
Kirk Honeycutt,
HollywoodReporter,
20 Oct. 2025
-
Look for an enrollment wizard through notifications and in Settings, Microsoft says.—
PC Magazine,
PC Magazine,
15 Oct. 2025
Noun
-
Superman and Lex Luthor have technically had a child together for decades in the comics, but as many a gay nerd has joked on the internet this year, Nicholas Hoult’s Lex finally seems like a Lex who would baby-trap Superman.—
James Factora,
Them.,
17 Oct. 2025
-
That bourbon, like all subsequent releases, was aged at Camp Nelson, a warehouse site located a few minutes from the distillery that is legendary (among whiskey nerds, at least) for the quality of the bourbon that comes from there.—
Jonah Flicker,
Robb Report,
15 Oct. 2025
Noun
-
Kennedy sought the advice of doctors after dealing with severe memory loss and brain fog, reportedly leading to a scan of his brain that showed a dark spot in the imagery.—
Angel Saunders,
PEOPLE,
15 Oct. 2025
-
Prior to their discoveries, it was thought that the brain was unable to change or regenerate after a certain point in early adulthood.—
Sandee LaMotte,
CNN Money,
14 Oct. 2025
Cite this Entry
“Brainiac.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/brainiac. Accessed 21 Oct. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share