Webster dictionary was developed by Noah Webster in the beginning of 19th century. On this website, you can find definition for quack from the 1913 edition of Webster's Revised Unabridged Dictionary. Define quack using one of the most comprehensive free online dictionaries on the web.

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quack
Part of Speech: Noun
Results: 7
1. Pertaining to or characterized by, boasting and pretension; used by quacks; pretending to cure diseases; as, a quack medicine; a quack doctor.
Part of Speech: noun
3. Hence, one who boastfully pretends to skill or knowledge of any kind not possessed; a charlatan.
Part of Speech: verb
2. To make vain and loud pretensions; to boast.
3. To act the part of a quack, or pretender.
Examples of usage:
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