overthrow -- (the termination of a ruler or institution (especially by force))
upset, derangement, overthrow -- (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")
Overview of verb overthrow
The verb overthrow has 2 senses
overthrow, subvert, overturn, bring down -- (cause the downfall of; of rulers; "The Czar was overthrown"; "subvert the ruling class")
overrule, overturn, override, overthrow, reverse -- (rule against; "The Republicans were overruled when the House voted on the bill")