MEANING: noun: A person who appeals to the prejudices and emotions of the people to gain power.
verb tr., intr.: To manipulate an issue, to speak, or to act in the manner of a demagogue.

ETYMOLOGY: From Greek demagogos (leader of the people), from demos (people) + agogos (leader). Earliest documented use: 1649.

HEMAGOGUE - ruler with an iron hand

FEMAGOGUE - Chair of the Federal Emergency Management Agency, who is full of prophecies of doom

DECAGOGUE - the Council of Ten