Where does “từ khi” come from?

từ khi (Vietnamese) comes from Vietnamese từ, from Chinese 字, from Chinese 母, from Proto-Sino-Tibetan *məʔ — mother.

từ khi (Vietnamese): since

Definitions

  1. since

Ancestry of “từ khi”, step by step

từ khi traces back through two separate lines of ancestry.

via Vietnamese từ

StepLanguageWordMeaning
1Vietnamesetừfrom, since; at, in; word
2Chinese字—
3Chinese母—
4Proto-Sino-Tibetan*məʔmother

via Vietnamese khí

StepLanguageWordMeaning
1VietnamesekhíClipping of không khí; gas; chi
2Proto-Vietickʰih—
Every word from Proto-Sino-Tibetan *məʔ →Every word from Chinese 母 →Every word from Chinese 字 →