Quacks are people who are trying to sell something that is not really effective or that is dangerous. They often try to sell their products to people who don't really need them.

  • The quack is selling a useless product.

  • The quack is selling a dangerous product.

Definition of quacks


act as a medical quack or a charlatan


an untrained person who pretends to be a physician and who dispenses medical advice


medically unqualified


the harsh sound of a duck


utter quacking noises

Nearby Words

quacks Pronunciation in a video (2)

Example Sentences for quacks

  • 1

    Next he became a quack doctor and soothsayer.

  • 2

    The girl was quacking in cold.

  • 3

    Brown was actually a swindler and quack.

  • 4

    People found the source of quacks.

  • 5

    Suddenly, the duck stopped quacks.

  • 6

    He was annoyed by loud quacks.

  • 7

    He heard quacks at night.

  • 8

    The sound of quack scared people.

  • 9

    This is the quack and the conduct of this man is quackery.

  • 10

    Where is this quack coming from