Where does “otgover” come from?

otgover (Romansch) comes from Latin octōber, from Latin octō, from Proto-Italic oktō, from Proto-Indo-European oḱtṓw, from Proto-Indo-European aḱ- — sharp, pointed; sharp, pointed, edgy; sharp,...

Ancestry of “otgover”, step by step

Step	Language	Word	Meaning
1	Latin	octōber	of October
2	Latin	octō	eight; 8
3	Proto-Italic	oktō	eight
4	Proto-Indo-European	oḱtṓw	eight
5	Proto-Indo-European	aḱ-	sharp, pointed; sharp, pointed, edgy; sharp,...

Every word from Proto-Indo-European aḱ- →Every word from Proto-Indo-European oḱtṓw →Every word from Proto-Italic oktō →