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Meaning: someone who cheats people by claiming to have special knowledge, especially in medicine

For example:

  • Marion reckons those quacks who charge a fortune for so-called natural cancer cures should be jailed for fraud.

  • In the nineteenth century, quacks would travel around selling their own "patent medicines", many of which contained powerful ingredients like opium or cocaine. Can you guess how Coca-Cola began?

Quick Quiz:

Tina sought treatment from an expensive quack because she
  1. had a flock of sick ducks
  2. hadn't been sick for years
  3. hadn't been cured by regular doctors

Discuss: quack

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