A breakaway party is often defined as a group or faction that splits off from an existing political movement or party to form a new organization. Some synonyms for breakaway party include splinter group, dissident faction, renegade movement, or schismatic organization. These terms all denote a group that has separated from a larger entity due to ideological or strategic differences. Other synonyms for a breakaway party might include secessionist group, independence movement, or separatist organization. These terms are often used to describe groups that seek to create their own autonomous state or region within a larger political entity.