demagogue
/ˈdɛməɡɒɡ/3 senses across 2 parts of speech
noun
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A political orator or leader who gains favor by pandering to or exciting the passions and prejudices of the audience rather than by using rational argument.
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A leader of the people.
verb
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To speak or act in the manner of a demagogue; to speak about (an issue) in the manner of a demagogue.