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

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

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

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

quack (kwæk) vb (intr) 1. (of a duck) to utter a harsh guttural sound 2. to make a noise like a duck

Dec 14, 2025 · quack (third-person singular simple present quacks, present participle quacking, simple past and past participle quacked) To make a noise like a duck. The more breadcrumbs …

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

Discover the meaning of Quack, explore its usage in everyday language, popular idioms, and fun facts that make this word fascinating. Perfect for learners and curious minds!

Quack definition: The characteristic sound uttered by a duck.

being or relating to a quack or quackery: quack methods; quack medicine. quack1 (kwak), n. Animal Behavior the harsh, throaty cry of a duck or any similar sound. to utter the cry of a duck …