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quack
From The Collaborative International Dictionary of English v.0.48:
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] .
From The Collaborative International Dictionary of English v.0.48:
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]
.
From The Collaborative International Dictionary of English v.0.48:
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]
