Answer:

dethrone

AnswerCrossword Clue
DETHRONERemove from power
DETHRONETake the championship from
DETHRONEUnseat
DETHRONERemove from office
DETHRONEOust from power
DETHRONEOust
DETHRONEUnseat.
DETHRONERemove from high office
DETHRONEOust from authority
DETHRONERemove a monarch
DETHRONERemove, as a monarch
DETHRONEUncrown
DETHRONEDepose