Where does “rājadāyo” come from?

rājadāyo (Pali) comes from Pali rājan, from Sanskrit राजन्, from Proto-Indo-Aryan Hrā́ȷ́ā, from Proto-Indo-Iranian Hrā́ȷ́ā, from Proto-Indo-European h₃rḗǵs, from Proto-Indo-European h₃reǵ- — to straighten, to right oneself; right; just.

Ancestry of “rājadāyo”, step by step

rājadāyo traces back through two separate lines of ancestry.

via Pali rājan

StepLanguageWordMeaning
1Palirājanking, ruler
2Sanskritराजन्a king, sovereign, prince, chief; a man of the...
3Proto-Indo-AryanHrā́ȷ́āking
4Proto-Indo-IranianHrā́ȷ́ā—
5Proto-Indo-Europeanh₃rḗǵsking, ruler
6Proto-Indo-Europeanh₃reǵ-to straighten, to right oneself; right; just

via Pali dāya

StepLanguageWordMeaning
1Palidāya—
2Sanskritदायgift, present, donation
3Sanskritदाa giver; to give; to cut, reap, divide, mow
4Proto-Indo-IraniandaH-give
5Proto-Indo-Europeandʰeh₁-to do, put, place
Every word from Proto-Indo-European h₃reǵ- →Every word from Proto-Indo-European h₃rḗǵs →Every word from Proto-Indo-Iranian Hrā́ȷ́ā →