The story
- Proto-Indo-European*upó
- Proto-Italic*supo
- Latinsub
- Latinsub-
- Englishsub-
- Spanishcarapacho
- Frenchcarapace
- Englishcarapace
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Englishcarapacial
- English todaysubcarapacial
From sub- + carapacial.
Etymology from Wiktionary, CC BY-SA 4.0.