adjective, brain·i·er, brain·i·est. Informal.
- intelligent; clever; intellectual.
Origin of brainy
Related formsbrain·i·ly, adverbbrain·i·ness, noun
First recorded in 1835–45; brain
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for brainier
Historical Examples of brainier
Mr. Mix knew that he was brainier than John Starkweather; he admitted it.
Mr. Miller: "I believed them sincere particularly the brainier men."
Rosalind not like Beatrice, Eleanor like Beatrice, only wilder and brainier.
British Dictionary definitions for brainier
Derived Formsbrainily, adverbbraininess, noun adjective brainier or brainiest
- informal clever; intelligent
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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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