Dem"a*gogue (?; 115), n. [Gr. a popular leader; commonly in a bad sense, a leader of the mob; the people + leading, fr. to lead; akin to E. act: cf. F. d'emagogue.]
A leader of the rabble; one who attempts to control the multitude by specious or deceitful arts; an unprincipled and factious mob orator or political leader.
© Webster 1913.