Proper noun
Middle Japanese
The ancestor language of Japanese, spoken in the period c. 800–1600.
Early Middle Japanese sees a significant amount of Chinese influence on the language's phonology – length distinctions become phonemic for both consonants and vowels, and series of both labialised (e.g. kwa) and palatalised (kya) consonants are added. Source: Internet
The end of Early Middle Japanese sees the beginning of a shift where the attributive form (Japanese rentaikei) slowly replaces the uninflected form (shūshikei) for those verb classes where the two were distinct. Source: Internet