Quackery/ˈkwækəri/ Definition 1 of 2Pro Tip 1/3Medical Dishonesty Used for dishonest claims about medical knowledge or treatments. The elixir he sold was pure quackery; it had no healing properties. Pro Tip 2/3Negative Connotation Quackery implies harmful deception that can endanger health. They exposed the clinic's quackery, saving countless lives. Pro Tip 3/3Beware of False Cures Quackery often involves selling fake cures or remedies. Many terminal patients fall victim to quackery in desperation.