Where does “oigner” come from?

oigner (Old French) comes from Latin ungo, from Latin unguo, from Proto-Italic ongʷō, from Proto-Indo-European h₃engʷ- — to smear, to anoint.

Ancestry of “oigner”, step by step

StepLanguageWordMeaning
1LatinungoI anoint, smear with oil, oil, grease
2LatinunguoAlternative form of ungō
3Proto-Italicongʷōto anoint
4Proto-Indo-Europeanh₃engʷ-to smear, to anoint
Every word from Proto-Indo-European h₃engʷ- →Every word from Proto-Italic ongʷō →Every word from Latin unguo →