Bwana is a Swahili term that originated from Africa, which refers to a person of authority or a boss. Several synonyms can be used to replace the word Bwana, such as master, sir, boss, supervisor, chief, manager, director or executive. These terms are often used when addressing a person who is in a position of power or leadership. These synonyms can be especially useful in a formal business setting or when addressing someone in authority. Regardless of the synonym you use, it is important to show respect when addressing someone in a position of authority or leadership.