Where does “etegves” come from?

etegves (Cornish) comes from Cornish etek, from Cornish eth, from Proto-Brythonic üiθ, from Proto-Celtic oxtū, from Proto-Indo-European oḱtṓw, from Proto-Indo-European aḱ- — sharp, pointed; sharp, pointed, edgy; sharp,...

etegves (Cornish): eighteenth

Definitions

eighteenth

Ancestry of “etegves”, step by step

Step	Language	Word	Meaning
1	Cornish	etek	eighteen
2	Cornish	eth	eight; scents
3	Proto-Brythonic	üiθ	eight
4	Proto-Celtic	oxtū	eight
5	Proto-Indo-European	oḱtṓw	eight
6	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-Celtic oxtū →