Synonyms and related words :
action, agitation, alienation, collaboration, coup, disaffection, estrangement, extremism, factiousness, fifth-column activity, fomentation, fraternization, high treason, instigation, insurgence, insurgency, insurgentism, insurrection, insurrectionism, lese majesty, misprision of treason, mutinousness, mutiny, petty treason, protest, putsch, quislingism, rabble-rousing, rebellion, rebelliousness, revolt, revolution, riotousness, seditiousness, stirring up, strike, subversiveness, traitorousness, treachery, treason, treasonableness, uprising, whipping up