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brainless

[breyn-lis]
See more synonyms for brainless on Thesaurus.com
adjective
  1. mentally weak; foolish; witless; stupid.
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Origin of brainless

First recorded in 1400–50, brainless is from the late Middle English word braynles. See brain, -less
Related formsbrain·less·ly, adverbbrain·less·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words

mindlessdumbfoolishimbecilesenselesssillystupidthoughtlesswitlessanencephalicanencephalous

Examples from the Web for brainless

Historical Examples

  • You cannot conceive in your mind how stubborn and brainless they are.

    The White Company

    Arthur Conan Doyle

  • Some big, burly, brainless cur of a fellow was always ahead of me.

  • For an hour he worked with the brainless things that constituted his party.

    The Monster Men

    Edgar Rice Burroughs

  • What interest have you, dare you have, in that brainless boy?

    The Night Riders

    Ridgwell Cullum

  • Go back to the lies and hypocrisies of society, and the brainless, mashers who adorn it!

    The Christian

    Hall Caine

British Dictionary definitions for brainless

brainless

adjective
  1. stupid or foolish
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Derived Formsbrainlessly, adverbbrainlessness, 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