What is the meaning of quack?

noun

  • An untrained person who pretends to be a physician and who dispenses medical advice.
  • The harsh sound of a duck.

verb

  • Utter quacking noises.
    • usage: "The ducks quacked"
  • Act as a medical quack or a charlatan.

adjective

  • Medically unqualified.
    • usage: "a quack doctor"
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). quack. Retrieved September 20, 2026, from http://smartdefine.org/quack/definitions/1181752
ChicagoWordNet. 2010. "quack" http://smartdefine.org/quack/definitions/1181752 (accessed September 20, 2026).
HarvardWordNet 2010, quack, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/quack/definitions/1181752>.
MLAWordNet. "quack" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/quack/definitions/1181752>
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