smooth brain
See also: smoothbrain
English
Alternative forms
Etymology
Nominalization of smooth-brained, possibly by reference to lissencephaly (a brain abnormality, usually resulting in severe developmental delay, characterized by the surface of the brain being smooth), or simply by reference to the human brain typically being wrinkly.
Noun
smooth brain (plural smooth brains) (derogatory, offensive)
- A stupid person.
- Synonyms: see Thesaurus:fool, Thesaurus:idiot
- I could not have made it easier for you smooth brains, yet you still messed up!
- Used other than figuratively or idiomatically: see smooth, brain.