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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

  • brainily adverb
  • braininess noun

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.

China’s advantage lies in the scale of its ambition, not only in the nation’s brainy tech hubs but also in areas such as Jingzhou, a city of five million people on the Yangtze River.

From The Wall Street Journal • Nov. 25, 2025

If the musicians’ visibility and viability has shifted, Sparks’ music remains inventive, brainy and flamboyant pop, often born of sunshiny moments and wistful memories that wend their way into lyrics.

From Los Angeles Times • May 28, 2025

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

From BBC • May 28, 2024

His bandmates were equally brainy: Mr. Gottlieb had a doctorate in musicology and Mr. Yarbrough once worked as a bouncer to pay for Greek lessons.

From New York Times • May 12, 2024

Of particular interest to a brainy, idealistic youth such as Farmer, Virchow helped define the field of medical anthropology—the study of human health and disease and public health care systems.

From "Mountains Beyond Mountains" by Tracy Kidder and Michael French