brain·​teas·​er | \ ˈbrān-ˌtē-zər How to pronounce brainteaser (audio) \

Definition of brainteaser

: something (such as a puzzle) that demands mental effort and acuity for its solution

Examples of brainteaser in a Sentence

Recent Examples on the Web

Chess and other games and brainteasers in general are typically prescribed to help stave off dementia. Jennifer Ouellette, Ars Technica, "The slow-burn psychological horror of Castle Rock makes for must-see TV," 4 Sep. 2018 What this argument reflects, in part, is one of the brainteasers of nuclear theology. The Economist, "What Donald Trump and Vladimir Putin ought to talk about in Helsinki," 12 July 2018 The immersive brainteaser within is playful, filled with subtle hints and special effects. Samantha Melamed,, "I tried Philly's first ice bar, at Clubhouse Sports Lounge, so you don't have to," 3 Apr. 2018 One of the last ten questions asks test takers to identify the similarity between a train and bicycle, and Trump isn’t so deranged to think that’s a world-class brainteaser. Adam K. Raymond, Daily Intelligencer, "Trump Bragged to RNC About Passing ‘Hard’ Cognitive Test," 2 Feb. 2018 That’s the key: 20 teams are sending a total of 39 representatives to this year’s competition, essentially morphing a brainteaser into the NBA Draft Combine for statisticians, engineers and developers. Jake Fischer,, "NBA Hackathon: Basketball's Math Movement Fosters All-Night Marathon," 22 Sep. 2017 Something this simple is more like a recipe for chicken soup than a circumvention device, says Keith Winstein, who solved this brainteaser with Marc Horowitz back in December. Victor C. Clarke, WIRED, "DVD Hacking for Dummies," 1 June 2001

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'brainteaser.' 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 brainteaser

1850, in the meaning defined above

Keep scrolling for more

Learn More about brainteaser

Statistics for brainteaser

Look-up Popularity

Time Traveler for brainteaser

The first known use of brainteaser was in 1850

See more words from the same year

Keep scrolling for more

More Definitions for brainteaser



English Language Learners Definition of brainteaser

: a puzzle that is difficult to figure out or solve

More from Merriam-Webster on brainteaser

Rhyming Dictionary: Words that rhyme with brainteaser

Comments on brainteaser

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


behavior toward others

Get Word of the Day daily email!

Test Your Vocabulary

Words for Summer: A Quiz

  • a closeup of a sunflower
  • Which of the following words means “of or relating to summer”?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!


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!