The story
- Proto-Indo-European*né
- Proto-Indo-European*n̥-
- Proto-Germanic*un-
- Proto-West Germanic*un-
- Old Englishun-
- Middle Englishun-
- Englishun-
- Proto-Indo-European*h₂éd
- Proto-Italic*ad
- Proto-Italic*ad-
- Latinad-
- Proto-Indo-European*pel-
- Proto-Indo-European*pelh₂-
- Proto-Italic*pelnō
- Latinpellō
- Latinappellāre
- Old Frenchapelerdeverb.
- Old Frenchapel
- Middle Englishapelen /appelen
- Englishappeal
- Englishappealable
- English todayunappealable
From un- + appealable.
Etymology from Wiktionary, CC BY-SA 4.0.