Manchu

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Suffix

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᠊ᠰᡠ (-su)

  1. Derivative suffix used to form nominal words with semantics of quality:
    ᠣᠩᡤᠣ᠊ (onggo-, to forget) + ‎᠊ᠰᡠ (-su) → ‎ᠣᠩᡤᠣᠰᡠ (onggosu, forgetfulness)