1. (a.) Disposed to arouse violent opposition to lawful authority; turbulent; factious\; guilty of sedition; as, seditious citizens.

2. (a.) of or pertaining to sedition; partaking of the nature of, or tending to excite, sedition; as, seditious behavior; seditious strife; seditious words.

alienated breakaway contumacious disaffected disloyal dissident extreme extremistic factious faithless inflammatory insurgent insurrectionary insurrectionist lawless mutineering mutinous perfidious rabble-rousing rebel rebellious refractory revolutional revolutionary riotous seditionary subversive traitorous treacherous treasonable turbulent turncoat unfaithful violent