Where does “fo-heidyl” come from?

fo-heidyl (Manx) comes from Manx fo-, from Manx fo, from Old Irish fo, from Proto-Celtic uɸo, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

fo-heidyl (Manx): caption

Definitions

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Ancestry of “fo-heidyl”, step by step

Step	Language	Word	Meaning
1	Manx	fo-	sub-, under-
2	Manx	fo	under; below; third-person singular masculine of...
3	Old Irish	fo	under, beneath; towards; through, throughout
4	Proto-Celtic	uɸo	under, below
5	Proto-Indo-European	upó	under, below
6	Proto-Indo-European	h₃ewp-	—

Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Manx fo- →