Where does “spādaʰ” come from?

spādaʰ (Old Persian) comes from Proto-Iranian *cwáHdah, from Proto-Indo-Iranian *ćwáHdʰaH, from Proto-Indo-European ḱwéh₁-dʰ-o-h₁.

Ancestry of “spādaʰ”, step by step

StepLanguageWordMeaning
1Proto-Iranian*cwáHdaharmy
2Proto-Indo-Iranian*ćwáHdʰaH—
3Proto-Indo-Europeanḱwéh₁-dʰ-o-h₁—
Every word from Proto-Indo-European ḱwéh₁-dʰ-o-h₁ →Every word from Proto-Indo-Iranian *ćwáHdʰaH →Every word from Proto-Iranian *cwáHdah →