'Quack' definitions:

Definition of 'quack'

(from WordNet)
adjective
Medically unqualified; "a quack doctor"
noun
An untrained person who pretends to be a physician and who dispenses medical advice
noun
The harsh sound of a duck
verb
Utter quacking noises; "The ducks quacked"
verb
Act as a medical quack or a charlatan

Definition of 'Quack'

From: GCIDE
  • Quack \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.] [1913 Webster]
  • 1. To utter a sound like the cry of a duck. [1913 Webster]
  • 2. To make vain and loud pretensions; to boast. " To quack of universal cures." --Hudibras. [1913 Webster]
  • 3. To act the part of a quack, or pretender. [1913 Webster]

Definition of 'Quack'

From: GCIDE
  • Quack \Quack\, n.
  • 1. The cry of the duck, or a sound in imitation of it; a hoarse, quacking noise. --Chaucer. [1913 Webster]
  • 2. [Cf. Quacksalver.] A boastful pretender to medical skill; an empiric; an ignorant practitioner. [1913 Webster]
  • 3. Hence, one who boastfully pretends to skill or knowledge of any kind not possessed; a charlatan. [1913 Webster]
  • Quacks political; quacks scientific, academical. --Carlyle. [1913 Webster]

Definition of 'Quack'

From: GCIDE
  • Quack \Quack\, a. Pertaining to or characterized by, boasting and pretension; used by quacks; pretending to cure diseases; as, a quack medicine; a quack doctor. [1913 Webster]

Synonyms of 'quack'

From: Moby Thesaurus

Words containing 'Quack'