scupperscupper1 | meaning of scupper1 in Collins Dictionariesscupper1 meaning, definition, what is scupper1: a drain or spout allowing water on the deck of a vessel to flow overboard: Learn more.a drain or spout allowing water on the deck of a vessel to flow overboardWhat does scupper1 mean and how do you use scupper1 in a sentence?[URL]/scupper
To scupper a plan or attempt means to spoil it completely. [mainly British, journalism] [V n] ⇒ If Schneider had seen him that would have scuppered all his plans. ⇒ If the Commission has its way, the entire deal will be scuppered.