Where does “助動詞” come from?

助動詞 (Japanese) comes from Japanese 助, from Middle Chinese 助.

助動詞 (Japanese): auxiliary verb; inflecting suffix or particle in...

Definitions

  1. auxiliary verb; inflecting suffix or particle in...

Ancestry of “助動詞”, step by step

助動詞 traces back through two separate lines of ancestry.

via Japanese 助

StepLanguageWordMeaning
1Japanese助assistance; help; assistant
2Middle Chinese助—

via Japanese 動詞

StepLanguageWordMeaning
1Japanese動詞verb
Every word from Middle Chinese 助 →Every word from Japanese 助 →