Where does “အလ္လာဟ်” come from?

အလ္လာဟ် (Burmese) comes from Arabic اللّٰه, from Proto-Semitic ʾil- — deity; god.

Ancestry of “အလ္လာဟ်”, step by step

Step	Language	Word	Meaning
1	Arabic	اللّٰه	God, Allah; the All-highest”, “God; the...
2	Proto-Semitic	ʾil-	deity; god