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

That’s why we are drawn to do some of the dumber stuff when things get to their darkest.

— Mikey O'Connell, HollywoodReporter, 31 July 2026
Mandylor is equally hilarious as a dumb thug who is so deserving of becoming shark bait.

— Randy Myers, Mercury News, 30 July 2026

Definition of dumb

Adjective

The slow pace continued for a while, but eventually, Punk took down Rhodes with a leaping heel kick and tweaked his knee.

— Blake Oestriecher, Forbes.com, 2 Aug. 2026
Long days were spent cleaning, drawing and waiting for customers during slow periods, all while mastering a craft that permanently alters another person’s body.

— Kansas City Star, Kansas City Star, 1 Aug. 2026

Definition of slow

Adjective

Drawing definitive conclusions from pre-season is foolish — but Lacey has shown his close control, pace, and scored an excellent goal in the previous friendly against Rosenborg.

— Cerys Jones, New York Times, 2 Aug. 2026
Johnson continued this week to push for his foolish and counterproductive desire to impose a $33-per-month tax on each Chicago job generated by the city’s largest private-sector employers.

— The Editorial Board, Chicago Tribune, 10 July 2026

Definition of foolish

Adjective

Abernathy Greenway Park walk with Trees Atlanta Take a walk through the park with a Trees Atlanta docent, who will teach simple tricks for telling trees apart and share stories about why trees are important and how to protect them.

— Mary Caldwell, AJC.com, 4 Aug. 2026
The Oldest Person in the World takes an ostensibly simple premise and explores its deeper resonance.

— Matthew Carey, Deadline, 4 Aug. 2026

Definition of simple

Adjective

Every season of Strange New Worlds has featured at least one episode that emphasizes Star Trek’s silly side (and this may not be the last such outing in season four).

— Keith Phipps, Vulture, 6 Aug. 2026
The silly yellow fruit that became a part of their culture was freighted, from the start, with suggestive meaning.

— Literary Hub, Literary Hub, 5 Aug. 2026

Definition of silly

Adjective

The images her sister captured after the strike show the trajectory of the projectile, which ripped through floor after floor, and left a gaping hole covered in a thick layer of white dust.

— Ava Bambuck, CNN Money, 6 Aug. 2026
Spread the vanilla Greek yogurt into an even layer, about ½ inch thick.

— Sharon Lawson, CBS News, 6 Aug. 2026

Definition of thick

Adjective

However, Storm co-owner Celeste Keaton was fined and suspended for five games after last Tuesday’s contest, when two girls sitting courtside in support of Cunnigham said Keaton cursed at them and called them insane.

— Sabreena Merchant, New York Times, 4 Aug. 2026
Continue reading … VIRUS RECKONING — COVID fury explodes as Fauci hearing revives 'insane' lockdown nightmare tales.

— , FOXNews.com, 31 July 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 7 Aug. 2026.

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Synonyms of brainless

adjective

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