overthrow

the termination of a ruler or institution (especially by force)

the act of disturbing the mind or body; "his carelessness could have caused an ecological upset"; "she was unprepared for this sudden overthrow of their normal way of living"

cause the downfall of; of rulers; "The Czar was overthrown"; "subvert the ruling class"

rule against; "The Republicans were overruled when the House voted on the bill"