quack Meaning in the Cambridge English Dictionary
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Meaning of “quack” in the English Dictionary

"quack" in British English

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quackverb [I]

uk   us   /kwæk/
to make the ​usualsound of a duck: The ​ducksstarted quacking ​loudly when we ​threw them some ​bread.

quacknoun [C]

uk   us   /kwæk/

quack noun [C] (PERSON)

disapproving a ​person who ​dishonestlypretends to have ​medicalskills or ​knowledge UK informal often disapproving a ​doctor: Have you ​seen a quack about that ​cough?

quack noun [C] (SOUND)

[C] the ​sound that a duck makes
(Definition of quack from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"quack" in American English

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quackverb [I]

 us   /kwæk/

quack verb [I] (SOUND)

to make the ​sound ducks make: The ​ducksstarted quacking.

quacknoun [C]

 us   /kwæk/

quack noun [C] (FALSE DOCTOR)

a ​person who ​falselypretends to have ​medicalskills or ​knowledge
(Definition of quack from the Cambridge Academic Content Dictionary © Cambridge University Press)
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