The word "powerbroker" refers to a person or organization that has a significant amount of influence or control over a particular domain. Synonyms for this term could include "mover and shaker," "influential figure," "leader," "kingmaker," "eminent personality," or "arbiter." Each of these words emphasizes different aspects of the powerbroker's role, whether it is their ability to shape the political or economic landscape, their personal charisma and reputation, or their ability to broker deals and alliances between different groups. Regardless of the specific term used, a powerbroker is a force to be reckoned with in their sphere of influence.