The word "intermediatory" refers to something that acts as a mediator or middleman. Some synonyms for this word include "intermediary," "go-between," "liaison," and "facilitator." Other related terms include "bridge," "link," "connector," and "conduit." These words all describe something or someone that serves as a connection between two or more parties, helping to facilitate communication or transactions. Depending on the context in which the word is being used, other suitable synonyms for "intermediatory" might include "arbitrator," "conciliator," "moderator," or "negotiator." By using synonyms for the word "intermediatory," it is possible to express similar ideas and meanings using different language or phrasing.