Braintwister is a term used to describe something that is challenging, puzzling or difficult to understand. Its antonyms are words that describe things as easy, simple, or uncomplicated. Some of the antonyms for braintwister include simple, easy, straightforward, uncomplicated, effortless, and undemanding. These words describe things that are easily comprehensible and do not require much processing power to understand. The opposite of a braintwister is something that anyone can comprehend without much thought or mental effort. These antonyms are useful when you want to communicate that something is easy or straightforward or express that you are looking for something less mentally demanding than a braintwister.