brainy

1 of 2

adjective

brainier; brainiest
Synonyms of brainynext
: having or showing a well-developed intellect : intelligent
braininess noun

braininess

2 of 2

noun

brain·​i·​ness
ˈbrā-nē-nəs
plural -es
: the quality or state of being brainy

Examples of brainy in a Sentence

Adjective a brainy student who didn't fit in socially
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
He gets reacquainted 15 years later with his Sword of Power along with childhood chum Teela (Camila Mendes), who’s brainier and brawnier than the majority of the guys, and his former Man-at-Arms Duncan (Idris Elba), the former protector of Adam’s family. Randy Myers, Mercury News, 3 June 2026 Nio Russell is a vocal standout as Joanne, the brainy but long-suffering girlfriend of the promiscuous and self-absorbed performance artist Maureen, played with endearing confidence by Michael Amira Temple. Pam Kragen, San Diego Union-Tribune, 1 June 2026 There’s something really brainy about that. Charles Usher, Midwest Living, 1 June 2026 Bibliophiles need not to look further than the crimson wall of novels as the brainiest backdrop for wedding photos. Yelena Moroz Alpert, Architectural Digest, 31 May 2026 See All Example Sentences for brainy

Word History

First Known Use

Adjective

1845, in the meaning defined above

Time Traveler
The first known use of brainy was in 1845

Browse Nearby Words

Cite this Entry

“Brainy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brainy. Accessed 18 Jun. 2026.

Kids Definition

brainy

adjective
brainier; brainiest
braininess noun

More from Merriam-Webster on brainy

Love words? Need even more definitions?

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

More from Merriam-Webster