A reactionary is a person who holds political views that favor a return to the status quo ante, the previous political state of society, which possessed characteristics (discipline, respect for authority, etc.) that he or she thinks are absent from the contemporary status quo of society. As an adjective, the word reactionary describes points of view and policies meant to restore the status quo ante.
Political reactionaries are at the right-wing of a political spectrum; yet, reactionary ideologies can be radical, in the sense of political extremism, in service to re-establishing the status quo ante...