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  1. Dictionary
    quack
    /kwak/

    noun

    • 1. the characteristic harsh sound made by a duck: "I heard a quack and saw some ducks huddled together"

    verb

    • 1. (of a duck) make a quack: "ducks quacked from the lake"

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  2. dictionary.cambridge.org › dictionary › englishQUACK | English meaning - Cambridge Dictionary

    QUACK definition: 1. to make the usual sound of a duck: 2. a person who dishonestly pretends to have medical skills…. Learn more.

  3. www.merriam-webster.com › dictionary › quackQuack Definition & Meaning - Merriam-Webster

    Learn the various meanings and uses of the word quack, from the sound of a duck to a fraudulent practitioner of medicine. See synonyms, examples, word history, and related articles.

  4. www.dictionary.com › browse › quackQUACK Definition & Meaning | Dictionary.com

    a person who pretends, professionally or publicly, to have skill, knowledge, or qualifications they do not possess; a charlatan. Synonyms: phony, mountebank. adjective. being a fraudulent or ignorant pretender to skills, especially medical skills: He's just a quack psychologist who complicates everyone's problems.

  5. dictionary.cambridge.org › us › dictionaryQUACK | definition in the Cambridge English Dictionary

    QUACK meaning: 1. to make the usual sound of a duck: 2. a person who dishonestly pretends to have medical skills…. Learn more.

  6. www.collinsdictionary.com › dictionary › englishQUACK definition and meaning | Collins English Dictionary

    Quack can mean a fraudulent or unqualified person who claims medical knowledge or skill, a sound like a duck, or a verb meaning to make such a sound. Learn more about the word origin, usage, and related terms from Collins English Dictionary.

  7. www.thefreedictionary.com › quackQuack - definition of quack by The Free Dictionary

    Quack can mean the sound of a duck, or a fraudulent person who claims medical knowledge or skills. Learn the origin, usage, and synonyms of quack from various dictionaries and translations.

  8. www.vocabulary.com › dictionary › quackQuack - Definition, Meaning & Synonyms | Vocabulary.com

    noun. an untrained person who pretends to be a physician and who dispenses medical advice. see more. adjective. medically unqualified. “a quack doctor” synonyms: unqualified. not meeting the proper standards and requirements and training. verb. act as a medical quack or a charlatan. see more. Pronunciation. US. /kwæk/ UK. /kwæk/