Where does “อา” come from?

อา (Thai) comes from Proto-Tai ʔaːᴬ — father's younger sister.

อา (Thai): younger brother or younger sister of one's...

Definitions

  1. younger brother or younger sister of one's...

Ancestry of “อา”, step by step

อา traces back through two separate lines of ancestry.

via Proto-Tai ʔaːᴬ

StepLanguageWordMeaning
1Proto-Taiʔaːᴬfather's younger sister

via Chinese Mandarin 阿

StepLanguageWordMeaning
1Chinese Mandarin阿—
Every word from Proto-Tai ʔaːᴬ →