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dimwit

[dim-wit]
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noun Slang.

a stupid or slow-thinking person.

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RELATED WORDS

dense, doltish, dumb, empty-headed, half-witted, obtuse, simple, simpleminded, thickheaded, unintelligent, boneheaded, thick-skulled

Origin of dimwit

An Americanism dating back to 1920–25; dim + wit1
Related formsdim·wit·ted, adjectivedim·wit·ted·ly, adverbdim·wit·ted·ness, noun

Synonyms for dimwit

SEE MORE SYNONYMS FOR dimwit ON THESAURUS.COM
dummy, nitwit, numskull, booby, dumbbell.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for dimwitted

dimwit

noun

informal a stupid or silly person
Derived Formsdim-witted, adjectivedim-wittedly, adverbdim-wittedness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for dimwitted

dimwit

n.

also dim-wit, U.S. college slang by 1922, from dim (adj.) + wit (n.). Related: dimwitted.

Online Etymology Dictionary, © 2010 Douglas Harper