Where does “ཀ” come from?

ཀ (Kurtop) comes from Tibetan ཀ, from Pali 𑀓, from Sanskrit कः, from Sanskrit किम्, from Proto-Indo-Aryan kás, from Proto-Indo-Iranian kás, from Proto-Indo-European kʷós — who.

Ancestry of “ཀ”, step by step

StepLanguageWordMeaning
1TibetanཀThe first letter of the Tibetan abugida
2Pali𑀓Brahmi script form of ka
3Sanskritकःnominative masculine singular of किम्
4Sanskritकिम्used as a particle of interrogation
5Proto-Indo-Aryankás—
6Proto-Indo-Iraniankáswho
7Proto-Indo-Europeankʷóswho
Every word from Proto-Indo-European kʷós →Every word from Proto-Indo-Iranian kás →Every word from Proto-Indo-Aryan kás →