The story
- Proto-Indo-European*úp
- Proto-Indo-European*upér
- Proto-Italic*super
- Latinsuper
- Latinsuper-
- Englishsuper-
- Middle Englishimposicioun
- Englishimposition
- English todaysuperimposition
From super- + imposition.
Etymology from Wiktionary, CC BY-SA 4.0.