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
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
And in the ultimate exemplification of how an endless stream of content begets pernicious bunkum, John McPhail’s Dear David is arguably the most brainless release of the year.
—Nicholas Bell, SPIN, 5 Dec. 2023
Except these mussels are eyeless, brainless, little brown creatures that few people have ever heard of.
—Robert Kunzig, Scientific American, 17 Oct. 2023
See All Example Sentences for brainless
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
And in the ultimate exemplification of how an endless stream of content begets pernicious bunkum, John McPhail’s Dear David is arguably the most brainless release of the year.
—Nicholas Bell, SPIN, 5 Dec. 2023
Except these mussels are eyeless, brainless, little brown creatures that few people have ever heard of.
—Robert Kunzig, Scientific American, 17 Oct. 2023
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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The brazen, silly grandeur of the piece was astounding.—
David Denby,
New Yorker,
10 Nov. 2025
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The Saturday Night Live alum's vast tattoo collection, at one point made up of around 200 pieces of body art, includes ink dedicated to his former girlfriends, as well as more silly, lighthearted designs.—
Nicholas Rice,
PEOPLE,
9 Nov. 2025
Adjective
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The thick artificial foliage is pre-lit with warm white LED bulbs spaced through the entire length of the 10-foot piece.—
Kate McGregor,
Architectural Digest,
5 Nov. 2025
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With more than 38,000 gallons of fuel on board the cargo flight bound for Hawaii, the crash created a massive ball of fire – punctuated by smaller explosions from flammable material on the ground – and sent a towering plume of thick black smoke into the sky.—
Karina Tsui,
CNN Money,
5 Nov. 2025
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 13 Nov. 2025.
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