Where does “未然形” come from?

未然形 (Japanese) comes from Japanese 形, from Middle Chinese 形.

未然形 (Japanese): a Japanese verbal inflectional category: the...

Definitions

  1. a Japanese verbal inflectional category: the...

Ancestry of “未然形”, step by step

未然形 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanesea shape; a form; a pattern, die, or model from...
2Middle Chinese

via Japanese 未然

StepLanguageWordMeaning
1Japanese未然having not yet happened
Every word from Middle Chinese Every word from Japanese