Where does “ᡩᠣᡵᡤᡳ ᠮᠣᠩᡤᠣ” come from?

ᡩᠣᡵᡤᡳ ᠮᠣᠩᡤᠣ (Manchu) comes from Manchu ᡩᠣᡵᡤᡳ, from Proto-Tungusic *dō, from Manchu ᠮᠣᠩᡤᠣ, from Middle Mongolian ᠮᠣᠩᠬᠣᠯ.

Ancestry of “ᡩᠣᡵᡤᡳ ᠮᠣᠩᡤᠣ”, step by step

StepLanguageWordMeaning
1Manchuᡩᠣᡵᡤᡳinside; interior; internal; inner
2Proto-Tungusic*dōinside, interior
3ManchuᠮᠣᠩᡤᠣMongol
4Middle Mongolianᠮᠣᠩᠬᠣᠯ
Every word from Middle Mongolian ᠮᠣᠩᠬᠣᠯEvery word from Manchu ᠮᠣᠩᡤᠣEvery word from Proto-Tungusic *dō