Where does “bhāya” come from?

bhāya (Pali) comes from Sanskrit भय, from Proto-Indo-Iranian *bʰayHás, from Proto-Indo-European bʰeyh₂- — to fear, be afraid; to strike, hit; to hew, cut.

Ancestry of “bhāya”, step by step

Step	Language	Word	Meaning
1	Sanskrit	भय	fear, alarm, dread; terror, dismay, danger,...
2	Proto-Indo-Iranian	*bʰayHás	—
3	Proto-Indo-European	bʰeyh₂-	to fear, be afraid; to strike, hit; to hew, cut

Words derived from “bhāya”

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bhāya — Etymology, Origin & Word History | Etymology Explorer