Stage a coup is a term used to describe a process in which a group of people attempt to overthrow a government or other authority. The two crossword solutions for this term are USURP (5 letters) and GRANTROL (9 letters). USURP means to seize power without legal authority, while GRANTROL means to take control of a government or other authority by force. Together, these two words describe the process of staging a coup.