Home / Vocabulary / 弟 弟 Kanji meanings and readings 弟 N4 younger brother; faithful service to elders On readingテイ、ダイ、デ Kun readingおとうと Radical弓 Related vocabulary ✦Illustration in preparation 兄弟 N5 きょうだい (humble) siblings ✦Illustration in preparation 弟 N1 おと younger brother ✦Illustration in preparation 弟 N5 おとうと younger brother ✦Illustration in preparation 従兄弟 N3 いとこ cousin (male)