ᡩ᠋᠋ᡝ᠋

From Proto-Tungusic *-dū,^[1] compare Jurchen [Term?], cognate with Even [script needed] (-dū), Evenki [script needed] (-dū), Solon [script needed] (-du), Negidal [script needed] (-dū), Udihe [script needed] (-du), Oroch [script needed] (-du), Nanai [script needed] (-du), Ulch [script needed] (-du), Orok [script needed] (-du).

Compare also Proto-Turkic *-da (“locative suffix”) and Proto-Mongolic *-da (“locative and dative suffix”). Whence also Turkish -de, Mongolian -д (-d). (Can this⁽⁺⁾ etymology be sourced?)

ᡩ᠋᠋ᡝ᠋ • (de)

1. Used to form locative case.

• ᡳ (-i), ᠪᡝ (be), ᠴᡳ (ci), ᡩᡝᡵᡳ (deri)