Where does “Budda” come from?

Budda (Old English) comes from Proto-Germanic buzdô, from Proto-Germanic būs-, from Proto-Indo-European bʰūs- — to move quickly.

Budda (Old English): beetle

Definitions

Step	Language	Word	Meaning
1	Proto-Germanic	buzdô	beetle, grub, swelling; beetle, grub", literally,...
2	Proto-Germanic	būs-	to erupt, burst, flow rapidly
3	Proto-Indo-European	bʰūs-	to move quickly

Budda — Etymology, Origin & Word History | Etymology Explorer