Antonym: allegiance. Similar words: seditious, edition, expedition, addition, condition, tradition, in addition, conditions. Meaning: [sɪ'dɪʃn] 
n. an illegal action inciting resistance to lawful authority and tending to cause the disruption or overthrow of the government.
n. an illegal action inciting resistance to lawful authority and tending to cause the disruption or overthrow of the government. 
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31. Anyone fomenting on advocating the leaving of Fort William Henry will be hung for sedition.
32. To prohibit any act of treason, secession, sedition and theft of state secrets.
33. More than 200 protesters were killed, and Mr. Kim was sentenced to death on sedition charges.
More similar words: seditious, edition, expedition, addition, condition, tradition, in addition, conditions, additional, traditional, conditional, traditionally, in addition to, unconditionally, predisposition, position, ambition, volition, dedication, prediction, medication, coalition, munitions, mitigation, litigation, transition, opposition, definition, inhibition, competition.