Brainless
Brainless adjective - Not having or showing an ability to absorb ideas readily.
Usage example: a teacher who affirms that there are no brainless students, only lazy ones
Dumb is a synonym for brainless in stupid topic. In some cases you can use "Dumb" instead the word "Brainless" as an adjective or a verb, when it comes to topics like idiotic. informal substitute
Mutual synonyms
Both words in one sentence
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Collingwood fans: "Deaf, dumb, blind and stupid/Spineless, gutless, brainless, heartless/And their heads and bums are interchangeble"
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Brainless Beauty: In the Blyton world, characters who are overly concerned about their appearances are regarded as shallow, dumb and vapid at best, or an Alpha Bitch at worst.
Source: Creator / Enid Blyton -
Too Dumb to Live: While the pigs were stupid in the games, the animation practically had them brainless.
Cite this Source
Dumb and Brainless. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/brainless/dumb
Brainless & Dumb. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/brainless/dumb>.
Dumb or Brainless. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/brainless/dumb.
Google Ngram Viewer shows how "brainless" and "dumb" have occurred on timeline