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Noun: quack  kwak
  1. An untrained person who pretends to be a physician and who dispenses medical advice
     
  2. The harsh sound of a duck
Adjective: quack  kwak
  1. Medically unqualified
    "a quack doctor"
Verb: quack  kwak
  1. Utter quacking noises
    "The ducks quacked"
     
  2. (medicine) act as a medical quack or a charlatan

Derived forms: quacked, quacks, quacking

See also: unqualified

Type of: act, behave, charlatan, do, doc, doctor, Dr., emit, let loose, let out, MD, medico, mountebank, physician, sound, utter

Encyclopedia: Quack