ていまい 弟妹 LinksSentence search for 弟妹Sentence search for ていまいSentence search for きょうだいKanji details for 弟 and 妹Edit in JMdict Noun1. younger brother and sisterOther forms弟妹 【きょうだい】Notesきょうだい: Gikun (meaning as reading) or jukujikun (special kanji reading). Discussions Log in to talk about this word.