Where does “káywalas” come from?

káywalas (Proto-Indo-Aryan) comes from Proto-Indo-Iranian káywalas, from Proto-Indo-European kéywelos — alone.

Ancestry of “káywalas”, step by step

StepLanguageWordMeaning
1Proto-Indo-Iraniankáywalas—
2Proto-Indo-Europeankéywelosalone
Every word from Proto-Indo-European kéywelos →Every word from Proto-Indo-Iranian káywalas →