What is the meaning of Sumu?

Alternative form of sum (Mongolian administrative division), sometimes used in relation to Inner Mongolia.

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Synonym of tomakka

inflection of sum:

  1. feminine nominative singular
  2. neuter nominative/accusative plural

feminine nominative singular

neuter nominative/accusative plural

a well

tomorrow

haze, mist

fog, mist

nebula

Rōmaji transcription of すむ

poison

venom

Source: wiktionary.org