The story
- Proto-Indo-European*h₁wes-
- Proto-Indo-European*h₁wésus?
- Proto-Indo-European*h₁es-?
- Proto-Indo-European*h₁su-
- Proto-Hellenic*ehu-
- Ancient Greekἐΰς (eǘs)
- Ancient Greekεὖ (eû)
- Englisheu-
- Proto-Indo-European*dʰeh₁-
- Proto-Indo-European*dʰéh₁s
- Proto-Indo-European*dʰh₁sós
- Proto-Hellenic*tʰehós
- Ancient Greekθεός (theós)
- Ancient Greekθεο- (theo-)
- Latintheo-
- Englishtheo-
- Englishtheism
- English todayeutheism
Coinage from eu- + theism (as antonym of dystheism) Attestation in a 1998 theology lecture https://web.archive.org/web/20071203180444/http://www.utexas.edu/cola/depts/philosophy/faculty/koons/356/lec19.html. Humorous attestation on Usenet in 2002http://groups.google.com/group/alt.games.everquest/browse_thread/thread/8f0df5dadf848aee/cb60e1f231543a29?lnk=st&q=eutheist&rnum=1#cb60e1f231543a29.
Etymology from Wiktionary, CC BY-SA 4.0.