Where does “ընդէր” come from?

ընդէր (Old Armenian) comes from Old Armenian ընդ, from Proto-Indo-European h₂énti, from Proto-Indo-European h₂énts, from Proto-Indo-European h₂ent-, from Proto-Indo-European h₂en- — on, onto.

ընդէր (Old Armenian): why?

Definitions

why?

Ancestry of “ընդէր”, step by step

ընդէր traces back through two separate lines of ancestry.

via Old Armenian ընդ

Step	Language	Word	Meaning
1	Old Armenian	ընդ	in the place, instead of; for; with; to, in the...
2	Proto-Indo-European	h₂énti	opposite; near; in front
3	Proto-Indo-European	h₂énts	forehead; front
4	Proto-Indo-European	h₂ent-	face; forehead; front
5	Proto-Indo-European	h₂en-	on, onto

via Old Armenian էր

Step	Language	Word	Meaning
1	Old Armenian	էր	why? for what reason or cause?; third-person...
2	Old Armenian	ի-	thing; what?
3	Old Armenian	հի-	something
4	Proto-Indo-European	*kʷís	—

Every word from Proto-Indo-European h₂en- →Every word from Proto-Indo-European h₂ent- →Every word from Proto-Indo-European h₂énts →