The story
- Proto-Indo-European*de
- Proto-Indo-European*déh₁
- Proto-Italic*dē
- Latindē
- Latindē-
- Englishde-
- Proto-Indo-European*bʰeydʰ-
- Proto-Indo-European*bʰeydʰós
- Proto-Italic*feiðos
- Latinfoedus
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Frenchfédéra
- Englishfederal
- Englishfederalize
- English todaydefederalize
From de- + federalize.
Etymology from Wiktionary, CC BY-SA 4.0.