Brother-in-law
"Brother-in-law" in Japanese
(お)義兄さん
(brother of one's husband)
(お)義兄さん
(brother of one's wife)
(お)義兄さん
(husband of one's sister)
小舅
kojūto
(brother of one's husband)
小舅
kojūto
(brother of one's wife)
義兄
gikei
(brother of one's husband)
義兄
gikei
(brother of one's wife)
義兄
gikei
(husband of one's sister)
義兄
gikei
(husband of the sister of one's husband)
義兄
gikei
(husband of the sister of one's wife)
義兄弟
gikyōdai
(brother of one's husband)
義兄弟
gikyōdai
(brother of one's wife)
義兄弟
gikyōdai
(husband of one's sister)
義兄弟
gikyōdai
(husband of the sister of one's husband)
義兄弟
gikyōdai
(husband of the sister of one's wife)
義弟
gitei
(brother of one's husband)
義弟
gitei
(brother of one's wife)
義弟
gitei
(husband of one's sister)
義弟
gitei
(husband of the sister of one's husband)
義弟
gitei
(husband of the sister of one's wife)
義理の兄
giri no ani
(brother of one's husband)
義理の兄
giri no ani
(brother of one's wife)
義理の兄
giri no ani
(husband of one's sister)
義理の兄
giri no ani
(husband of the sister of one's husband)
義理の兄
giri no ani
(husband of the sister of one's wife)
義理の弟
giri no otōto
(brother of one's husband)
義理の弟
giri no otōto
(brother of one's wife)
義理の弟
giri no otōto
(husband of one's sister)
義理の弟
giri no otōto
(husband of the sister of one's husband)
義理の弟
giri no otōto
(husband of the sister of one's wife)
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.