1
as in dumb
not having or showing an ability to absorb ideas readily
a teacher who affirms that there are no brainless students, only lazy ones
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2
as in stupid
showing or marked by a lack of good sense or judgment
a brainless decision to talk on her cell phone while weaving in and out of traffic
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Recent Examples of brainless
The O’Haras happen to move in next door to him.
Frothy and often filthy without being brainless (send thanks across the Atlantic for that good British dialogue), this is escapism done right.
—
Judy Berman, TIME, 30 Oct. 2024
So, what can the neuronal activity of a tiny, brainless creature possibly tell us about the evolution of our own complex brains?
—Elizabeth Rayne, Ars Technica, 15 June 2024
But the most impressive is first-time writer-director Molly Manning Walker getting us not just to forgive her central triad their brash and brainless bravado but to grieve for it when it’s gone.
—Jessica Kiang, Los Angeles Times, 2 Feb. 2024
An oyster, immobile and nearly brainless, is hardly even an animal, despite what the taxonomists tell us.
—Peter Rubin, Longreads, 9 Jan. 2024
See All Example Sentences for brainless
Judy Berman, TIME, 30 Oct. 2024
So, what can the neuronal activity of a tiny, brainless creature possibly tell us about the evolution of our own complex brains?
—Elizabeth Rayne, Ars Technica, 15 June 2024
But the most impressive is first-time writer-director Molly Manning Walker getting us not just to forgive her central triad their brash and brainless bravado but to grieve for it when it’s gone.
—Jessica Kiang, Los Angeles Times, 2 Feb. 2024
An oyster, immobile and nearly brainless, is hardly even an animal, despite what the taxonomists tell us.
—Peter Rubin, Longreads, 9 Jan. 2024
See All Example Sentences for brainless
Recent Examples of Synonyms for brainless
Adjective
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As Legally Blonde's Elle Woods, Witherspoon charted a memorable path from dumb blonde to Harvard Law School graduate.—
Ryan Coleman,
Entertainment Weekly,
6 Nov. 2025
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Celebrities fight it out to be eliminated from the competition as quickly as possible to avoid being crowned the nation’s dumbest.—
Peter White,
Deadline,
4 Nov. 2025
Adjective
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What gave me the crazy idea to stand at the bar, listening to that woman being praised for her stupid f---ing commitment to New York City and her ugly f---ing buildings?—
Charlotte Phillipp,
PEOPLE,
7 Nov. 2025
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Her mechanism for luring victims involves a stick, someone’s hair, her blood, and another person stupid enough to let her through their front door.—
Ryan Lattanzio,
IndieWire,
6 Nov. 2025
Adjective
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Hoover finished 319 yards on 34-of-50 passing, but his two turnovers were critical mistakes that led to TCU’s slow start in the first half.—
Steven Johnson,
Fort Worth Star-Telegram,
9 Nov. 2025
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When visiting the exhibit, plan on taking your time to make the most of it, or what the American Federation of Arts calls slow looking.—
Susan B. Barnes,
Southern Living,
9 Nov. 2025
Adjective
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That was questionable, but not egregiously foolish, in our view, because of the limited amount of time left.—
Barry Jackson,
Miami Herald,
3 Nov. 2025
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Another agent pointed to how contractions in post-strike, post-pandemic Hollywood have decimated the theater business, creating new opportunities that Netflix would be foolish to pass up.—
Chris Lee,
Vulture,
3 Nov. 2025
Adjective
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According to Bruce Blair, a former Air Force launch officer and nuclear policy expert, between 1962 and the mid-1970s the most powerful digits on the globe were simple – eight zeros.—
Charlotte Reck,
CNN Money,
9 Nov. 2025
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That something as simple as a COVID vaccine might improve survival in cancer patients receiving standard immunotherapy has taken oncologists by surprise — in a good way.—
Lisa Jarvis,
Twin Cities,
8 Nov. 2025
Adjective
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To say the road to the Super Bowl goes through Jacksonville sounds silly in the NFL’s grand scheme, but for a talented and decorated Bills group that never has won there, that’s the first stop on the quest.—
Tim Graham,
New York Times,
6 Jan. 2026
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Citing the Monroe Doctrine is silly.—
U T Readers,
San Diego Union-Tribune,
6 Jan. 2026
Adjective
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They’re made of a buttery soft, thick material that will keep you warm and cozy at home all winter.—
Isabel Garcia,
PEOPLE,
9 Jan. 2026
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Too thick of a mascara coat, and suddenly my gaze droops.—
Conçetta Ciarlo,
Vogue,
8 Jan. 2026
Adjective
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His votes, like his tattoos, just weren’t insane enough anymore.—
Howie Carr,
Boston Herald,
7 Nov. 2025
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His voice messages of songs are amazing and insane.—
Kristin Robinson,
Billboard,
6 Nov. 2025
Cite this Entry
“Brainless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/brainless. Accessed 11 Jan. 2026.
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