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.

A quack is a "fraudulent or ignorant pretender to medical skill" or "a person who pretends, professionally or publicly, to have skill, knowledge, qualification or credentials they do not possess; a charlatan or …

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

quackery, the characteristic practice of quacks or charlatans, who pretend to knowledge and skill that they do not possess, particularly in medicine. The quack makes exaggerated claims about his or her …

Jan 20, 2026 · Adjective quack (comparative more quack or quacker, superlative most quack or quackest) (quacker and quackest are rare, and probably used humorously) Falsely presented as …

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

Sep 12, 2025 · The word “quack” isn’t just slang—it's a potent term used to identify deception, fraud, and unqualified practitioners. Whether you’re trying to spot a fake healthcare provider or understanding …

19 hours ago · Oregon Duck headlines from around the country Quack Fix 2026-2-23 Duck headlines from around the country