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Want to find out what does the word quack mean? We gathered all the possible definitions of the word quack on our website. Our definition dictionary is updated all the time with new definitions and is ready to help you.


Part of speech: Noun

The cry of the duck, or a harsh sound like it; one who pretends to have medical skill or any skill that he does not possess; a pretender.

Part of speech: Verb

To utter a harsh cry, as a duck; to pretend to be a doctor of medicine; to boast loudly.

Part of speech: Adjective

Pretending to know how to cure disease; as, a quack doctor.

Usage examples "quack":