Where does “vaiz” come from?

vaiz (Zhuang) comes from Arabic واعظ, from Arabic وَعَظَ — to preach.

vaiz (Zhuang): water buffalo

Definitions

Step	Language	Word	Meaning
1	Arabic	واعظ	preacher
2	Arabic	وَعَظَ	to preach

vaiz — Etymology, Origin & Word History | Etymology Explorer