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[brey-nee] /ˈbreɪ ni/
adjective, brainier, brainiest. Informal.
intelligent; clever; intellectual.
Origin of brainy
First recorded in 1835-45; brain + -y1
Related forms
brainily, adverb
braininess, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for brainier
Historical Examples
  • Mr. Mix knew that he was brainier than John Starkweather; he admitted it.

    Rope Holworthy Hall
  • Mr. Miller: "I believed them sincere particularly the brainier men."

    The Pullman Boycott W. F. Burns
  • Rosalind not like Beatrice, Eleanor like Beatrice, only wilder and brainier.

    This Side of Paradise F. Scott Fitzgerald
British Dictionary definitions for brainier


adjective brainier, brainiest
(informal) clever; intelligent
Derived Forms
brainily, adverb
braininess, 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
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Word Origin and History for brainier



1845, from brain (n.) + -y (2). Latin equivalent cerebrosus meant "passionate, hot-headed," leading Tucker to remark that " 'Brainy' is not a natural expression for 'frantic.' "

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for brainier



Intelligent; sagacious (1840s+)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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