adjective, brain·i·er, brain·i·est. Informal.

intelligent; clever; intellectual.

Origin of brainy

First recorded in 1835–45; brain + -y1
Related formsbrain·i·ly, adverbbrain·i·ness, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for brainier

brilliant, bright, clever, intellectual, sapient, smart

Examples from the Web for brainier

Historical Examples of brainier

  • Mr. Mix knew that he was brainier than John Starkweather; he admitted it.


    Holworthy Hall

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

  • 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 or brainiest

informal clever; intelligent
Derived Formsbrainily, adverbbraininess, 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 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