Where does “Sadau” come from?

Sadau (Hausa) comes from Proto-Austronesian Sadu, from Pali sādhu, from Sanskrit साधु, from Proto-Indo-Aryan *sáHdʰuṣ, from Proto-Indo-Iranian sáHdʰuš, from Proto-Indo-European séHdʰ-u-s, from Proto-Indo-European -us — Forms adjectives from Caland system roots.

Ancestry of “Sadau”, step by step

StepLanguageWordMeaning
1Proto-AustronesianSadu—
2Palisādhuwell
3Sanskritसाधुstraight, right; leading straight to a goal,...
4Proto-Indo-Aryan*sáHdʰuṣ—
5Proto-Indo-IraniansáHdʰušsuccessful, accomplished
6Proto-Indo-EuropeanséHdʰ-u-s—
7Proto-Indo-European-usForms adjectives from Caland system roots
Every word from Proto-Indo-European -us →Every word from Proto-Indo-European séHdʰ-u-s →Every word from Proto-Indo-Iranian sáHdʰuš →