Where does “thành thạo” come from?

thành thạo (Vietnamese) comes from Vietnamese thảo, from Chinese 草, from Japanese 草, from Middle Chinese 草.

thành thạo (Vietnamese): skilled; expert; fluent

Definitions

  1. skilled; expert; fluent

Ancestry of “thành thạo”, step by step

thành thạo traces back through two separate lines of ancestry.

via Vietnamese thảo

StepLanguageWordMeaning
1Vietnamesethảograsses and herbs; to write, to draft; to be...
2Chinese草—
3Japanese草grass; a weed; a herb
4Middle Chinese草—

via Vietnamese thành

StepLanguageWordMeaning
1Vietnamesethànhinto; to achieve one's goal, to become, to turn...
2Chinese青—
3Proto-Sino-Tibetan*sreŋto live
Every word from Middle Chinese 草 →Every word from Japanese 草 →Every word from Chinese 草 →