The story
- Proto-Indo-European*swé
- Proto-Indo-European*dʰeh₁-
- Proto-Indo-European*swe-dʰh₁-
- Proto-Hellenic*séswōtʰa
- Ancient Greekἔθω (éthō)
- Ancient Greekἔθνος (éthnos)
- Englishethno-
- Englishnationalism
- English todayethnonationalism
From ethno- + nationalism.
Etymology from Wiktionary, CC BY-SA 4.0.