idiot
//ˈɪdiət//
Noun
idiotSingular
idiotsPlural
1
A stupid or foolish person; someone who acts without intelligence or common sense.
I felt like an idiot when I locked my keys in the car.
2
(archaic, medical) A person with severe intellectual disability or profound mental retardation.
In the 19th century, the term idiot was used in medical contexts to describe severe intellectual disabilities.