弟 おとと noun (common) (futsuumeishi) Also 弟: おとうと younger brother おと younger brother (of an older brother) てい Tei 弟おとと Noun English JMdict (multilingual) 1 noun (common) (futsuumeishi) archaic younger sibling 漢字 kanji used 弟 younger brother, faithful service to elders 7画