\ ˈbrā-nē \
brainier; brainiest

Definition of brainy

: having or showing a well-developed intellect : intelligent

Keep scrolling for more

Other Words from brainy

braininess noun

Examples of brainy in a Sentence

Recent Examples on the Web

Think of it like a TaskRabbit or Thumbtack for remote, more brainy work. Theodore Schleifer, Recode, "In yet another 2018 IPO, the freelancing startup Upwork has filed to go public," 24 July 2018 But her affect and persona are what made her brainy, insightful videos popular. Katherine Cross, The Verge, "The Oscar Wilde of YouTube fights the alt-right with decadence and seduction," 24 Aug. 2018 But when the orchestra erupts with pointillist riffs and rawness, even as Jack and Ennis share an emotional moment, the music makes them — unsophisticated, rural characters — seem oddly brainy. New York Times, "Review: ‘Brokeback Mountain,’ the Opera, Falls Short of Its Potential," 1 June 2018 Today, however, many of the brainy people who once might have been teachers instead become doctors, lawyers or professors. Robert Maranto, WSJ, "Pay Teachers More—but Make Sure They Earn It," 21 May 2018 Dot, who will rock a polka-dot frock but lacks her predecessor's mania for circles, is brainy and mathematical (and black here). Robert Lloyd,, "Netflix’s clever ‘Harvey Street Kids’ revives classic comics with modern-day fun," 28 June 2018 The brainy Barbie, who comes in four skin tones, is available online for $13.99. Melissa Locker, Time, "Meanwhile Barbie Has a Career As a Robotics Engineer Who Wears Flats Now," 26 June 2018 With that smile, an amazing thing happened: Amy became lovable, too, subtly defying the idea that there’s something inherently unpleasant about an ambitious, brainy woman. Sauleha Kamal, The Atlantic, "The Character Who Made Me Love Brooklyn Nine-Nine," 12 June 2018 So many of us have wanted wanted to Siri get smarter, certainly compared to its brainier rivals, Amazon’s Alexa or the Google Assistant. Edward C. Baig, USA TODAY, "Apple shows how iOS 12 will change your next iPhone," 4 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'brainy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of brainy

1845, in the meaning defined above

Keep scrolling for more

Learn More about brainy

Dictionary Entries near brainy

brain wave







Statistics for brainy

Last Updated

17 Jan 2019

Look-up Popularity

Time Traveler for brainy

The first known use of brainy was in 1845

See more words from the same year

Keep scrolling for more

More Definitions for brainy



English Language Learners Definition of brainy

informal : very intelligent


\ ˈbrā-nē \
brainier; brainiest

Kids Definition of brainy

: very smart

Keep scrolling for more

More from Merriam-Webster on brainy

Thesaurus: All synonyms and antonyms for brainy

Spanish Central: Translation of brainy

Nglish: Translation of brainy for Spanish Speakers

Comments on brainy

What made you want to look up brainy? Please tell us where you read or heard it (including the quote, if possible).


to express emotion in a dramatic way

Get Word of the Day daily email!

Test Your Vocabulary

What did you just call me?! A Quiz

  • rows-of-various-emoji
  • If a member of the audience describes your speech as bombastic, does that person mean it is:
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!