Where does “Bylilly” come from?

Bylilly (Navajo) comes from Navajo bá, from Proto-Athabaskan *-aˑ — for.

Ancestry of “Bylilly”, step by step

Bylilly traces back through two separate lines of ancestry.

via Navajo bá

StepLanguageWordMeaning
1Navajobáfor him/her/it/them, for his/her/its/their sake;...
2Proto-Athabaskan*-aˑfor

via Navajo álílee

StepLanguageWordMeaning
1Navajoálíleemagic power
2Navajoálíílmagic, sorcery, supernatural power
Every word from Proto-Athabaskan *-aˑ →Every word from Navajo bá →