Beanbrain is an informal, mildly derogatory term for a stupid or dim-witted person. It joins a long tradition of 'small thing + brain' compound insults (pea-brain, bird-brain) implying the subject's head is occupied by something inconsequentially tiny rather than a proper brain. The register is more comic than vicious — it is the kind of insult used between friends or in light-hearted ribbing rather than serious attacks.
I can't believe the beanbrain forgot to save his work before the computer crashed.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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A mild derogatory slang term for a stupid or dim-witted person. The bean implies the brain is small, hard, and not particularly functional. Belongs to the category of playful insults where the comedy softens the blow — it is more affectionate mockery than genuine contempt. Common in British and American casual speech, often directed at someone making an obvious mistake.
She called herself a beanbrain after spending twenty minutes looking for her glasses while wearing them.
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(slang, derogatory) A stupid person; an idiot.
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