The meaning of QUACK is to make the characteristic cry of a duck. How to use quack in a sentence.

QUACK definition: the harsh, throaty cry of a duck or any similar sound. See examples of quack used in a sentence.

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

If one smug, pompous, hilarious duck named Quack is good, then two must be better. Megan Mullally guest-stars as Quack #2.

If you call someone a quack or a quack doctor, you mean that they claim to be skilled in medicine but are not.

Dec 14, 2025 · Adjective quack (comparative more quack or quacker, superlative most quack or quackest) (quacker and quackest are rare, and probably used humorously) Falsely presented …

Definition of quack noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

The Quacks of Quedlinburg, a bag-building, push-your-luck board game, affectionately known as "Quacks" for short, designed by Wolfgang Warsch.

Pertaining to or characterized by quackery of any kind; specifically, falsely pretending to cure disease, or ignorantly or fraudulently set forth as remedies: as, a quack doctor; quack medicines.