Thesaurus
To save this word, you'll need to log in.
Keep scrolling for more
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).
Test Your Vocabulary
Name that Thing: Flower Edition
- Name that flower
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
- Name that Thing: Flower Edition
Can you correctly identify these flowers?
Take the quiz - March 2020 Words of the Day Quiz Take the quiz
- Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz - Dictionary Devil
The dictionary has been scrambled—can you put it back together?
Play the game
Share brainteaser
Time Traveler for brainteaser
The first known use of brainteaser was in 1850
See more words from the same year