Pathos is a Greek word meaning 'suffering' or 'experience', and it is used in persuasive speech as an appeal to the emotions of the audience. Pathos is the way of creating a persuasive argument by evoking an emotional response in the audience/reader.
You can use pathos when trying to persuade, by appealing to an audience's hopes and dreams, playing on their fears or worries, or appealing to their particular beliefs or ideals.
EX: If you don't buy this life insurance, you are letting your family down.
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