The story
- Proto-Indo-European*h₂eydʰ-
- Proto-Hellenic*áitʰō
- Ancient Greekαἴθω (aíthō)
- Ancient Greekᾱ̓ήρ (āḗr)influ.?
- Ancient Greekαἰθήρ (aithḗr)
- Latinaethēr
- GermanÄther
- GermanEther
- Proto-Indo-European*swel-der.?
- Ancient Greekῡ̔́λη (hū́lē)
- GermanEthy
- Englishethyl
- Englisheth-
- Ancient Greekῡ̔́λη (hū́lē)
- Englisheth(ylene)
- English todayetorphine
From eth(ylene) + -orphine (“morphinan derivate”).
Etymology from Wiktionary, CC BY-SA 4.0.