When referring to a person or a position, the term 'highest ranking' is often used to denote seniority or superior status. However, there are several synonyms that convey similar meanings, including 'topmost,' 'premier,' 'supreme,' 'chief', and 'superior.' Each of these terms can be used to describe a person who holds a position of authority or a title that commands respect and admiration. Additionally, these words can be used to describe situations or scenarios that are considered to be the most important or significant. All in all, while 'highest ranking' is a commonly used term, these synonyms provide a range of options for those looking to describe elevated individuals or positions.