Where does “Robu” come from?

Robu (Romanian) comes from Romanian rob, from Old East Slavic робъ, from Proto-Slavic orbъ, from Proto-Indo-European h₃órbʰos, from Proto-Indo-European h₃erbʰ- — to change allegiance, status, ownership;...

Ancestry of “Robu”, step by step

Step	Language	Word	Meaning
1	Romanian	rob	slave
2	Old East Slavic	робъ	serf; slave
3	Proto-Slavic	orbъ	servant, slave
4	Proto-Indo-European	h₃órbʰos	orphan; servant, slave, worker
5	Proto-Indo-European	h₃erbʰ-	to change allegiance, status, ownership;...

Words derived from “Robu”

Robuleț
Robaia
Robete
Robești
Roboiu

Every word from Proto-Indo-European h₃erbʰ- →Every word from Proto-Indo-European h₃órbʰos →Every word from Proto-Slavic orbъ →