to overstep one's status or position; to usurp or arrogate power and privileges belonging to a superior

presumptuous; dictatorial; behaving in a way that exceeds one's proper rank or status

tyranny; government by a usurper or absolute ruler

a ruler who has seized power without legal right; a tyrant or usurper

(literary) to adopt a title or honor that one is not entitled to, especially the title of emperor; to use an illegal or unauthorized title

to take or use a title, name, or rank for oneself or another without having the legal authority or right to do so