noun
foolish older brother and smart younger brother
A set phrase contrasting an inept older brother with a capable younger one. Rare and literary; mainly encountered in classical or formal contexts.
「愚兄賢弟」という言葉は、兄が愚かで弟が賢いという対比を表す。
The phrase 愚兄賢弟 expresses a contrast where the older brother is foolish and the younger brother is wise.
A Sino-Japanese compound from 愚 (foolish), 兄 (older brother), 賢 (wise), and 弟 (younger brother). The exact origin is uncertain; it appears as a set phrase in classical Chinese-influenced writing.