noun
learned fool; book smart but lacking common sense
A mildly derogatory term for someone highly educated or academically intelligent but impractical, socially inept, or lacking real-world judgment.
彼は学者バカで、簡単な家事もできない。
He's a learned fool who can't even do simple housework.
学者バカと言われないように、もっと社会経験を積みたい。
I want to gain more real-world experience so I won't be called a book-smart fool.
Compound of 学者 (scholar) and バカ (fool). The exact origin is uncertain, but it likely arose as a colloquial label for academics perceived as impractical.