The word "de-poser" refers to removing someone from a position of power or authority. One synonym for it is "dethrone," which implies overthrowing a monarch or a leader. "Depose" is another synonym that specifically refers to removing someone from a position of authority, especially in a legal or political context. "Oust" is a more general synonym that can refer to removing someone from any position of power or influence. "Topple" is another synonym that connotes bringing down someone from a position of power. These synonyms can be used interchangeably, depending on the context and the intended meaning. Overall, there are various synonyms available for the word "de-poser" that can be used depending upon the circumstance.