noun
Slang term for a foolish or clueless person. Often used jokingly or in mild insults.
あいつは本当にバカ人だな。
That guy is a real idiot.
そんな簡単なこともわからないなんて、バカ人だね。
You don't even understand something that simple? What a stupid person.
Compound of バカ (fool) and 人 (person). The exact origin of バカ is uncertain, but it is a well-established colloquial term.