A person who verbally manipulates others into doing or believing something, especially something that is not in their best interest. I could tell that he was a fast talker just by the way he tried to close the deal so quickly.Used car salesmen have a reputation for being fast talkers. They'll say anything to sell a car.
someone who can talk in a clever way in order to persuade people to do or believe something, often something that is not honest or not true Don't trust him Sal, he's a fast talker who's always out for his own good.