build upon

present singular third person builds upon · participle present building upon · participle past built upon · past built upon

1. Synonym of build on.

   However, while reusing the existing alignment was considered, it was ultimately discounted for several reasons - not least because some sections have been built upon, particularly approaching Cambridge from the south, while the section through Bedford now forms part of a country park.

   2023 November 15, Chris Howe, “East West Rail and the Cambridge connection”, in RAIL, number 996, page 56

   Synonyms: build on