n. A factious commotion in a state; the stirring up of such a commotion; incitement of discontent against government and disturbance of public tranquillity, as by inflammatory speeches or writings, or acts or language tending to breach of public order: as, to stir up a sedition; a speech or pamphlet, abounding in sedition.n. Synonyms Rebellion, Revolt, etc. See insurrection.