A "Marplot" refers to a person who inadvertently disrupts or spoils a plan or project, often through meddling or interference. The term originates from a character in the 18th-century play "The Marplot," written by George Colman the Elder. This character's actions lead to complications and misunderstandings, illustrating how well-intentioned involvement can sometimes lead to negative outcomes. In modern usage, calling someone a marplot suggests that their interference, despite good intentions, has caused more harm than good. This concept is relevant in various contexts, including business, relationships, and team projects, where collaboration can be undermined by unhelpful actions.