BRAINLESS Synonyms: 197 Similar and Opposite Words

brainless

adjective

ˈbrān-ləs

Definition of brainless

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

Synonyms & Similar Words

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Antonyms & Near Antonyms

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

Synonyms & Similar Words

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 brainless This extends well beyond the 2025 Bombers, their signature head-scratching and somewhat brainless play on the field has plagued them dating back to 2021. — James O'Connell, New York Daily News, 7 Aug. 2025 There's really no way to prep for the show — basically, just don't be brainless. — Lindsay Soll, EW.com, 25 July 2025 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 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

The friends aren’t dumb; they’ve just been baked for so long that acting dumb is a habit.

— Amy Nicholson, Los Angeles Times, 13 Aug. 2026
Perhaps in writing it, Salinger was trying to negotiate whether his remarkable survival through some of the war’s worst gauntlets could be chalked up to dumb luck, or divine intervention.

— Literary Hub, Literary Hub, 10 Aug. 2026

Definition of dumb

Adjective

The Dodge Durango Hellcat is the most accessible way to go stupid-fast in a three-row family car thanks to the Escalade V‘s high price tag.

— Byron Hurd, The Drive, 13 Aug. 2026
Proudly stupid and surprisingly sweet, Dylan Meyer’s stoner buddy comedy is a tribute to friendship best enjoyed with your own ride-or-die by your side — joints optional.

— Angie Han, HollywoodReporter, 12 Aug. 2026

Definition of stupid

Adjective

Those include Japan’s massive debt that exceeds 200% of GDP, fiscal stimulus that’s expected to worsen the deficit, and a central bank that’s been slow to raise rates in the face of high inflation.

— Jason Ma, Fortune, 15 Aug. 2026
With two outs, Junior Caminero hit a slow roller on a 1-2 slider that third baseman Encarnacion-Strand could not field cleanly for a run-scoring infield single.

— ABC News, ABC News, 15 Aug. 2026

Definition of slow

Adjective

That’s economically foolish and potentially devastating for patients.

— Steve Forbes, Forbes.com, 17 Aug. 2026
As some of us will inevitably succumb to its grand and growing illusion, the rest may get the opportunity to find the key to understanding how so many others could be fooled and so foolish.

— Letters to the Editor, The Orlando Sentinel, 9 Aug. 2026

Definition of foolish

Adjective

With other phones, even something simple like replacing an aging battery often requires melting adhesive, prying apart fragile glass panels, and decoupling cables.

— Ryan Whitwam, ArsTechnica, 18 Aug. 2026
For a generation that grew up under those glowing Pizza Hut pendants, the appeal is simple.

— Ryan Brennan, Miami Herald, 18 Aug. 2026

Definition of simple

Adjective

But to make some generalization that all career women are psychotic because Glenn Close happened to be psychotic at the end of that movie is just silly.

— Mark Olsen, Los Angeles Times, 12 Aug. 2026
Residents riding on two wheels in Overland Park might see some new silly signs along the city’s most popular paths and trails.

— Taylor O'Connor August 12, Kansas City Star, 12 Aug. 2026

Definition of silly

Adjective

Swathes of those still standing are marked for death, their fate written like braille in the form of scores of tiny holes — no thicker than a dot left by a ballpoint pen — beneath the bark.

— Jack Bantock, CNN Money, 13 Aug. 2026
Eastern handles are shorter and thicker, catering more to those who use a Penhold grip, where the head of the paddle is facing down and the paddle is held like a pen.

— BestReviews, Chicago Tribune, 13 Aug. 2026

Definition of thick

Adjective

And their friendship, a folie à deux spiral of insane ideas powered by ungodly quantities of pot, becomes akin to a superpower.

— Angie Han, HollywoodReporter, 12 Aug. 2026
These mega facilities are popping up everywhere which means lots of people are spending insane money instead of pulling out the hose and bucket.

— Joe Kinsey OutKick, FOXNews.com, 12 Aug. 2026

Definition of insane

Browse Nearby Words

braining

brainless

brainlessness

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“Brainless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/brainless. Accessed 19 Aug. 2026.

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Synonyms of brainless

adjective

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