Opposers are people or groups who stand in opposition to something. They may disagree with a policy, idea, or action, and seek to prevent or reverse it. There are several synonyms for the word opposers. One is "dissenters," which refers to those who hold a differing opinion from the majority. Another synonym is "objectors," which implies a more active resistance to a plan or proposal. "Critics" may also be used to describe those who are opposed to an idea, but who do so through analysis and evaluation rather than outright opposition. Finally, "adversaries" suggests a more intense or personal level of opposition, often in a competitive context.