Brain and Knucklehead

Opposite meaning words

Brain noun - A very smart person.

Usage example: the brains all sit together at lunch

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Knucklehead is an antonym for brain.

Nearby Words: brainstorm, brainy, brainless, brained, braining

Knucklehead noun - A stupid person.

Usage example: I'd like to get my hands on the knucklehead who designed that paper-towel dispenser

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Brain is an antonym for knucklehead in topics: stupid person, dummy.

Cite this Source

Knucklehead and Brain. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/brain/knucklehead

Brain & Knucklehead. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/brain/knucklehead>.

Knucklehead or Brain. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/brain/knucklehead.

Google Ngram Viewer shows how "brain" and "knucklehead" have occurred on timeline