Where does “subhā” come from?

subhā (Kham) comes from Pali sabhā, from Sanskrit सभा, from Sanskrit -एय.

Ancestry of “subhā”, step by step

Step	Language	Word	Meaning
1	Pali	sabhā	assembly; congregation; convention; etc
2	Sanskrit	सभा	an assembly, congregation, meeting, council,...
3	Sanskrit	-एय	—

subhā — Etymology, Origin & Word History | Etymology Explorer