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Synonyms

brainy

American  
[brey-nee] / ˈbreɪ ni /

adjective

Informal.
brainier, brainiest
  1. intelligent; clever; intellectual.


brainy British  
/ ˈbreɪnɪ /

adjective

  1. informal clever; intelligent

"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

Other Word Forms

Etymology

Origin of brainy

First recorded in 1835–45; brain + -y 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

While corvids and parrots are unquestionably brainy, they flounder with some cognitive tasks.

From The Wall Street Journal • May 22, 2026

In a bright, charismatic performance, McCalla’s Elinor brings to life the character’s brainy charm and self-possession.

From Los Angeles Times • Apr. 14, 2025

With its blend of culinary history, intense challenges and playful banter, “Clash of the Cookbooks” feels like comfort viewing with a brainy twist, perfect to binge over the holiday break.

From Salon • Dec. 25, 2024

Ms Terry said people keep assuming she is "brainy" because she is studying for her fourth degree.

From BBC • May 28, 2024

All the brainy people in the audience, like Grace’s father and the district superintendent, chuckled.

From "The Smartest Kid in the Universe" by Chris Grabenstein

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