Scuppered is a word that is used to describe a situation where things did not go as planned. Some synonyms for scuppered include thwarted, foiled, frustrated, and stymied. These words all convey a sense of disappointment and failure, but they each have their own nuanced meanings. Thwarted suggests that someone actively worked against the plan, while foiled implies that the plan was almost successful but was ultimately defeated. Frustrated suggests a sense of exasperation, while stymied suggests a situation where progress was blocked or stopped altogether. Regardless of which synonym you choose, the overall sense is one of disappointment and failure.