"Supe" can be used as a slang term for "superintendent," but there are a number of synonyms for this word that you can use when writing or speaking. Some common alternatives include "manager," "director," "supervisor," "administrator," "chief," "boss," and "leader." These words all refer to someone who is in charge of overseeing a specific area of operations, whether it's a business, a school, or a group of employees. Depending on the context, different synonyms may be more appropriate - for example, "director" may imply a higher level of authority than "supervisor," while "chief" may suggest more of a strategic or visionary role.