The antonyms for the word "in subordinate" are numerous, including authoritative, commanding, dominant, powerful, leading, superior, chief, and principal. All of these words describe a person or thing that is in a position of control, leadership, or influence over others. They are the opposite of "in subordinate," which means that someone or something is not in a position of authority or control over others. In a workplace or organizational context, being "in subordinate" can be a negative thing, as it can indicate a lack of competence or leadership skills. However, it can also be a positive thing if one is able to work collaboratively with others and support those in leadership roles.