Where does “変格活用” come from?

変格活用 (Japanese) comes from Japanese 変格, from Japanese 変, from Middle Chinese 變.

変格活用 (Japanese): irregular conjugation

Definitions

  1. irregular conjugation

Ancestry of “変格活用”, step by step

変格活用 traces back through two separate lines of ancestry.

via Japanese 変格

StepLanguageWordMeaning
1Japanese変格irregularity; irregular conjugation; translative...
2Japanesea change
3Middle Chinese

via Japanese 活用

StepLanguageWordMeaning
1Japanese活用application; inflection; to utilize

Words derived from “変格活用

Every word from Middle Chinese Every word from Japanese Every word from Japanese 変格
変格活用 — Etymology, Origin & Word History | Etymology Explorer