Coup d''etat (6)
I believe the answer is:
putsch
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">coup d'etat</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for putsch that I've seen before include "Violent attempt to overthrow a government" , "Change of government by force" , "Coup d'etat" , "Coup dtat" , "A sudden political rebellion" .)