have scuppered
Present perfect conjugation of scupper. There are other translations for this conjugation.

scupper

The French and Dutch have scuppered the project, yet you go on as if this never happened.
Los franceses y los neerlandeses han tumbado el proyecto, pero ustedes siguen adelante como si nada.
Outraged locals have scuppered the sale of an Italian island to a businessman from New Zealand.
Varios residentes locales han salido a defenestrar la venta de una isla en Italia a un empresario neozelandés.
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