The story
- Proto-Indo-European*úp
- Proto-Indo-European*upér
- Proto-Italic*super
- Latinsuper
- Latinsuper-
- Englishsuper-
- Proto-Indo-European*mer-der.?
- Latinmorbus
- Proto-Indo-European*dʰeh₁-
- Latinmorbidus
- Englishmorbid
- English todaysupermorbid
Etymology from Wiktionary, CC BY-SA 4.0.