Where does “enter-” come from?

enter- (English) comes from French entré, from Middle French entre, from Old French entre, from Latin inter, from Proto-Indo-European h₁entér, from Proto-Indo-European h₁en — in; in, inside.

enter- (English): mutually, between; inter-; Alternative form of...

Definitions

mutually, between; inter-; Alternative form of...

Ancestry of “enter-”, step by step

enter- traces back through two separate lines of ancestry.

via French entré

Step	Language	Word	Meaning
1	French	entré	past participle of entrer
2	Middle French	entre	between
3	Old French	entre	among; amongst
4	Latin	inter	between, among; during, while
5	Proto-Indo-European	h₁entér	between
6	Proto-Indo-European	h₁en	in; in, inside

via Ancient Greek ἔντερον

Step	Language	Word	Meaning
1	Ancient Greek	ἔντερον	guts, viscera intestine, gut, belly, bowel, womb;...
2	Proto-Indo-European	h₁énteros	inside, within
3	Proto-Indo-European	-teros	Contrastive or oppositional adjectival suffix

Words derived from “enter-”

entertake

Every word from Proto-Indo-European h₁en →Every word from Proto-Indo-European h₁entér →Every word from Latin inter →