Dictionary.com
Thesaurus.com
Synonyms

brainteaser

American  
[breyn-tee-zer] / ˈbreɪnˌti zər /

noun

  1. a puzzle or problem whose solution requires great ingenuity.

Etymology

Origin of brainteaser

First recorded in 1920–25; brain + tease + -er 1 ( def. )

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.