superstruct
To build over or upon (another structure); to erect upon (a foundation).
archaic, figuratively
This is the only proper basis on which to superstruct first innocency and then virtue.
Where it comes from
Latin superstrūctus, past participle of superstruō (“to build upon”); super (“over”) + struō (“to build”). See super- and structure.
Adapted from the Wiktionary entry superstruct (CC BY-SA 4.0).