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ILCAA Joint Research Project

Synchrony and Diachrony of Mongolic Languages: Internal and External Factors

Synchrony and diachrony of Mongolic languages: internal and external factors


  • Mongolic languages
  • linguistic typology
  • language contact
  • comparative linguistics
  • database


  • Inner Asia

Website (in Japanese)

About the Project

Project term: April, 2018–March, 2021

This project aims to identify both the synchronic diversity and diachronic changes among Mongolic languages, which are widely spoken in inner Eurasia. We can find two factors of diversity among the languages: One is internal change, such as autonomous sound changes; the other is external influence, such as borrowing vocabulary or grammatical features from neighboring languages. To explore these factors, we focus on accomplishing the following two research activities: 1. Conducting a typological study of Mongolic languages (i.e., their microvariation) and neighboring languages, especially focusing on nominal and verbal morphology, phonology, syntactic features, borrowing, etc.; 2. Creating a database that integrates primary sources of Mongolic languages.

Yasuhiro YAMAKOSHI, Project Coordinator (Associate Professor, ILCAA)



  • Yasuhiro YAMAKOSHI (ILCAA)


  • Norikazu KOGURA
  • Tokusu KUREBITO

Joint Researchers

  • Shiho EBIHARA
  • Suzushi HAYATA
  • Rile HAO
  • Masayoshi KAKUDO
  • Tetsuya KAWASUMI
  • Shinjiro KAZAMA
  • Kasami OTAKE
  • Baek SANGYUB
  • Nobuharu SATO
  • Naoki UETA
  • Hiroyuki UMETANI
  • Yohei YAMADA
  • Julie P.M. LEFORT
  • Erika SANDMAN



The 2nd meeting Report (Japanese)757KB

  • Date/Time: Sat 15 Dec 2018 12:00–18:00
  • Venue: Room 405, ILCAA
  • Language: Japanese
  • Organized by Core Project “Linguistic Dynamics Science 3 (LingDy3)”
  • Shinjiro KAZAMA (ILCAA Joint Researcher, Tokyo University of Foreign Studies)
    “Some grammatical problems in Khalkha Mongolian”
    Naoki UETA (ILCAA Joint Researcher, Osaka University)
    “The aspiration contrast and acoustic features in Mongolian”
    Masami OTAKE (ILCAA Joint Researcher, JSPS/Tokyo University of Foreign Studies)
    “Overview of the Khitan language”
    All participants
  • *If you want to participate in this meeting, please contact to Yasuhiro Yamakoshi, the project organizer in advance. Email address is yamakoshi[at]

The 1st meeting Report (Japanese)(575KB)

  • Date/Time: Sat 30 Jun 2018 13:00-18:00
  • Venue: Room 304, ILCAA
  • Yasuhiro YAMAKOSHI (ILCAA)
    Project orientation
    Hitoshi KURIBAYASHI (ILCAA Joint Researcher, Tohoku University)
    “Some Problems on the transliteration (Romanization) of Mongolian script found on databases for the Mongolian language”
    Yasuhiro YAMAKOSHI (ILCAA) and Norikazu KOGURA (ILCAA)
    “Report: Database for Mongolic Languages constructed in ILCAA”
    All participants
  • *Sorry, this is a closed meeting. If you want to participate, please contact to Yasuhiro Yamakoshi, the project organizer. Email address is yamakoshi[at]

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