BRAINLESS Synonyms: 197 Similar and Opposite Words

brainless

adjective

ˈbrān-ləs

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 There's really no way to prep for the show — basically, just don't be brainless. —

Lindsay Soll, EW.com, 25 July 2025 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 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

And Lorenzen delivering this stink bomb made the 48,366 in attendance feel as dumb as rocks for braving the cold.

— Troy Renck, Denver Post, 4 Apr. 2026
Well, dumber isn’t quite right — and is only meant affectionately by Grabinski himself.

— Sarah Shachat, IndieWire, 2 Apr. 2026