brainiac

noun

ˈbrā-nē-ˌak 
Definition of brainiac
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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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 Not the brainiacs in charge, apparently. — Rachel Marsden, Hartford Courant, 17 Apr. 2026 Even at a flagship public university, the true type-A brainiacs might have to work harder to find one another. — Rose Horowitch, The Atlantic, 4 Apr. 2026 The bright-eyed Redmayne really fits the part of a brainiac – especially in a story about one of our greatest minds. — Brian Truitt, USA Today, 9 Mar. 2026 Like the other characters in the book, Harper is a stock figure, the brainiac child, but her fearlessness in the face of a crumbling, dishonest world reinvigorates the type. — Hannah Gold, New Yorker, 21 Jan. 2026 See All Example Sentences for brainiac
Recent Examples of Synonyms for brainiac
  1. genius
  2. wizard
  3. nerd
  4. brain
Noun
  • Parton wrote it as a forgiving farewell to Porter Wagoner, the duet partner who had helped launch her career but also tried to restrict her when her genius took her beyond their partnership.
    — Ann Powers, NPR, 26 Aug. 2026
  • Curry plays billionaire Roger Corwin, head of a communications satellite company that just happens to be a rival to the Angels’ client, software genius Eric Knox (Sam Rockwell, in another standout performance).
    — ArsTechnica, ArsTechnica, 26 Aug. 2026
Definition of genius
Noun
  • And for all the Padres’ successes under private equity wizard Peter Seidler, his biggest bet went bust, the ‘23 Padres missing the playoffs despite his approving MLB’s third-highest payroll.
    — Tom Krasovic, San Diego Union-Tribune, 25 Aug. 2026
  • He a notoriously vain, boastful and fame-obsessed wizard well versed in Memory Charms who is recruited by Dumbledore as Professor of Defence Against the Dark Arts at Hogwarts.
    — Nellie Andreeva, Deadline, 24 Aug. 2026
Definition of wizard
Noun
  • If that is not possible, be a nerd and tuck your long pants into your socks.
    — Carl R. Gold, Baltimore Sun, 14 Aug. 2026
  • Shane is an experienced deer-tracking dog handler, and Ryan is a data nerd by training and a diehard bowhunter.
    — Alex Robinson, Outdoor Life, 12 Aug. 2026
Definition of nerd
Noun
  • According to health officials, exposure to rabies can also happen when a person touches a bat's saliva or brain tissue or wakes up with one in their bedroom.
    — Nicholas Lentz, CBS News, 24 Aug. 2026
  • An 8-year-old has died after contracting a rare brain-eating amoeba believed to have been encountered while swimming in a lake near her home, her family and health officials said.
    — Diego Mendoza, CNN Money, 24 Aug. 2026
Definition of brain

Browse Nearby Words

brained
brainiac
brainiacs
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Cite this Entry

“Brainiac.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/brainiac. Accessed 28 Aug. 2026.

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