Where does “udo” come from?

udo (Latin) comes from Latin ūdus, from Latin uvidus, from Latin uveo, from Proto-Indo-European wegʷ- — wet, moist.

Ancestry of “udo”, step by step

Step	Language	Word	Meaning
1	Latin	ūdus	—
2	Latin	uvidus	moist, wet, damp, humid, dank; drunken; vapid
3	Latin	uveo	—
4	Proto-Indo-European	wegʷ-	wet, moist

udo — Etymology, Origin & Word History | Etymology Explorer