Where does “wetā(je)-” come from?

wetā(je)- (Proto-Italic) comes from Proto-Indo-European weth₂- — to say.

Ancestry of “wetā(je)-”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	weth₂-	to say

Words derived from “wetā(je)-”

Every word from Proto-Indo-European weth₂- →

wetā(je)- — Etymology, Origin & Word History | Etymology Explorer