The story
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Germanic*un-
- Proto-West Germanic*un-
- Old Englishun-
- Middle Englishun-
- Englishun-
- Englishdenomination
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Englishdenominational
- English todayundenominational
From un- + denominational.
Etymology from Wiktionary, CC BY-SA 4.0.