Definitions for: Quack

[n] the harsh sound of a duck
[n] an untrained person who pretends to be a physician and who dispenses medical advice
[v] act as a medical quack or a charlatan
[v] utter quacking noises; "The ducks quacked"

Webster (1913) Definition: Quack, v. i. [imp. & p. p. Qvacked; p. pr. & vb. n.
Quacking.] [Of imitative origin; cf. D. kwaken, G. quacken,
quaken, Icel. kvaka to twitter.]
1. To utter a sound like the cry of a duck.

2. To make vain and loud pretensions; to boast. `` To quack
of universal cures.'' --Hudibras.

3. To act the part of a quack, or pretender.

Quack, n.
1. The cry of the duck, or a sound in imitation of it; a
hoarse, quacking noise. --Chaucer.

2. [Cf. Quacksalver.] A boastful pretender to medical
skill; an empiric; an ignorant practitioner.

3. Hence, one who boastfully pretends to skill or knowledge
of any kind not possessed; a charlatan.

Quacks political; quacks scientific, academical.

Quack, a.
Pertaining to or characterized by, boasting and pretension;
used by quacks; pretending to cure diseases; as, a quack
medicine; a quack doctor.

See Also: act, behave, charlatan, do, doc, doctor, Dr., emit, let loose, let out, MD, medico, mountebank, physician, sound, utter

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