Synonyms for Demagogue:

n.

figurehead, chief, autocrat, the Establishment, chieftain, dictator, employer, boss, enforcer. agitating person (noun)
fanatic, rebel, agitator, revolutionary, rabble-rouser.
agitator (noun)
fanatic, revolutionary, agitator, speaker, rebel.
demagogue (noun)
rabble-rouser, demagog.

Other synonyms:

dictator, speaker, autocrat, chieftain, rebel, employer. chief, enforcer, figurehead. boss. instigator
agitator.
Other relevant words:
chief, fanatic, dictator, chieftain, revolutionary, employer, autocrat, agitator, enforcer, boss, rebel, speaker, figurehead.

Usage examples for demagogue

  1. The people are not quick, but they find out a knave or a demagogue if you give them time." – The Honorable Peter Stirling and What People Thought of Him by Paul Leicester Ford
  2. He proved beyond a doubt that he was only a demagogue incapable of learning lessons of wise statesmanship during the years of reflection that were given him in exile. – Lord Elgin by John George Bourinot
  3. A like process of depravation the world has before now witnessed in political life, when a man of brilliant natural endowments has yielded to low ambitions and stooped to unworthy means, till what was meant to be a statesman turns put to be a demagogue – Birds in the Bush by Bradford Torrey