Imbécil (en. Fool)
/imˈbesil/
Slang Meanings
Fool who comes to believe he is intelligent.
That guy is an imbecile who thinks he knows everything.
Ese tipo es un imbecil que cree que lo sabe todo.
Refers to someone who acts without thinking.
Don't be an imbecile, that makes no sense.
No seas imbecil, eso no tiene sentido.