昆こん弟ていMeanings1nounbrothersarchaicArchaic term for brothers, found in classical Chinese-influenced texts. In modern Japanese, 兄弟 (きょうだい) is used instead.古ふるい漢かん文ぶんでは「昆こん弟てい」は兄きょう弟だいを意い味みした。In old Chinese-style writing, 昆弟 meant brothers.