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Related to fast talk: Straight Talk
1. noun Speech that is fervent, persuasive, glib, and (usually) manipulative or deceptive in intention. These door-to-door salesmen are adept at fast talk, trying to convince you to buy something before you can consider the purchase properly. The CEO always had a lot of fast talk lined up if anyone challenged the ethics of the company's business transactions.
2. verb To speak in a fervent, facile, and (usually) manipulatively or deceptively persuasive manner. In this usage, it is usually hyphenated. Be careful when you speak to the police—their detectives could fast-talk you into believing you'd killed your own mother.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.