overthrow

Noun

• 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
    

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

Verb

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

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

Related words

• Synonyms: 
  upset , derangement , overrule , overturn , override , reverse , subvert , bring down