Where does “oneros” come from?

oneros (Romanian) comes from French onéreux, from Middle French onereux, from Old French onereus, from Latin onerosus, from Latin onus, from Proto-Indo-European h₃énh₂os, from Proto-Indo-European h₃enh₂- — to onerate; to charge.

oneros (Romanian): onerous

Definitions

onerous

Ancestry of “oneros”, step by step

Step	Language	Word	Meaning
1	French	onéreux	onerous
2	Middle French	onereux	—
3	Old French	onereus	—
4	Latin	onerosus	burdensome, heavy, oppressive; onerous, irksome
5	Latin	onus	burden, load; cargo, freight
6	Proto-Indo-European	h₃énh₂os	load; burden
7	Proto-Indo-European	h₃enh₂-	to onerate; to charge

Every word from Proto-Indo-European h₃enh₂- →Every word from Proto-Indo-European h₃énh₂os →Every word from Latin onus →