The Wordsmith Dictionary

Quack, v. i. [imp. & p. p. Qvacked; p. pr. & vb. n. Quacking.] Etym: [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

QUACK Quack, n.

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

2. Etym: [Cf. Quacksalver. ]

Defn: 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. Carlyle.

QUACK

QUACK Quack, a.

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

QUACKERY

Quack "er *y, n.; pl. Quackeries (.

Defn: The acts, arts, or boastful pretensions of a quack; false pretensions to any art; empiricism. Carlyle.

QUACK GRASS

QUACK GRASS Quack " grass `. (Bot. )

Defn: See Quitch grass.

QUACKISH

QUACKISH Quack "ish, a.

Defn: Like a quack; boasting; characterized by quackery. Burke.

QUACKISM

QUACKISM Quack "ism, n.

Defn: Quackery. Carlyle.

QUACKLE

Quac "kle, v. i. & t. [imp. & p. p. Quackled; p. pr. & vb. n.Quackling.] Etym: [Cf. Querken. ]

Defn: To suffocate; to choke. [Prov. Eng. ]

QUACKSALVER

Quack "sal *ver, n. Etym: [D. kwakzalver; cf. kwakzalven to quack or boast of one's salves. See Quack, Salve, n.]

Defn: One who boasts of his skill in medicines and salves, or of the efficacy of his prescriptions; a charlatan; a quack; a mountebank. [Obs. ] Burton.

New American Oxford Dictionary

quack

quack 1 |kwak kwæk | ▶noun [ in sing. ] the characteristic harsh sound made by a duck. ▶verb [ no obj. ] (of a duck ) make this sound. • informal talk loudly and foolishly. ORIGIN mid-16th cent. (as a verb ): imitative.

quack

quack 2 |kwæk kwak | ▶noun a person who dishonestly claims to have special knowledge and skill in some field, typically in medicine: [ as modifier ] : quack cures. DERIVATIVES quack er y |ˈkwakərē |noun, quack ish adjective ORIGIN mid 17th cent.: abbreviation of earlier quacksalver, from Dutch, probably from obsolete quacken ‘prattle ’ + salf, zalf (see salve 1 ).

quack grass

quack grass ▶noun another term for couch grass. ORIGIN early 19th cent.: quack, variant of quick, northern English form of quitch .

Oxford Dictionary

quack

quack 1 |kwak | ▶noun the characteristic harsh sound made by a duck. ▶verb [ no obj. ] (of a duck ) make a quack. • informal (of a person ) talk loudly and foolishly. ORIGIN mid 16th cent. (as a verb ): imitative.

quack

quack 2 |kwak | ▶noun a person who dishonestly claims to have special knowledge and skill in some field, typically medicine. • Brit. informal a doctor. DERIVATIVES quackery noun, quackish adjective ORIGIN mid 17th cent.: abbreviation of earlier quacksalver, from Dutch, probably from obsolete quacken ‘prattle ’ + salf, zalf (see salve 1 ).

quack grass

quack grass ▶noun North American term for couch 2. ORIGIN early 19th cent.: quack, variant of quick, northern form of quitch .

American Oxford Thesaurus

quack

quack noun a quack selling fake medicines: swindler, charlatan, mountebank, trickster, fraud, fraudster, impostor, hoaxer; informal con man, snake oil salesman, shark, grifter. CHOOSE THE RIGHT WORD quack, charlatan, dissembler, fake, impostor, mountebank There are many different ways to describe a fake, a colloquial term for anyone who knowingly practices deception or misrepresentation. Someone who sells a special tonic that claims to do everything from curing the common cold to making hair grow on a bald man's head is called a quack, a term that refers to any fraudulent practitioner of medicine or law. Mountebank sometimes carries implications of quackery, but more often it refers to a self-promoting person who resorts to cheap tricks or undignified efforts to win attention (political mountebanks ). A charlatan is usually a writer, speaker, preacher, professor, or some other “expert ” who tries to conceal his or her lack of skill or knowledge by resorting to pretentious displays (supposedly a leading authority in his field, he turned out to be nothing but a charlatan ). An individual who tries to pass himself or herself off as someone else is an impostor (an impostor who bore a close physical resemblance to the king ), although this term can also refer to anyone who assumes a title or profession that is not his or her own. Although all of these deceivers are out to fool people, it is the dissembler who is primarily interested in concealing his or her true motives or evil purpose (he is a dissembler who weaves a tangled web of lies ).These notes show fine distinctions in meaning between closely related synonyms to help you find the best word.

Oxford Thesaurus

quack

quack noun 1 the man is a quack selling fake medicines: swindler, charlatan, mountebank, confidence trickster, fraud, fraudster, impostor, trickster, racketeer, hoaxer, sharper, rogue, villain, scoundrel; informal con man, shark, flimflammer, sharp; Brit. informal twister; N. Amer. informal grifter, bunco artist, chiseller; Austral. informal shicer, magsman, illywhacker; dated confidence man; rare defalcator. 2 get the quack to examine you: doctor, physician, medical practitioner, medical man /woman /person; Navy surgeon; informal doc, medic, medico; archaic leech, sawbones. ▶adjective a quack doctor | a quack cancer therapy: bogus, false, fraudulent, unqualified, not genuine; spurious, sham, imitation, mock, fake, feigned, simulated, dummy, make-believe, so-called, forged, counterfeit, pseudo, pretended; informal phoney, pretend; Brit. informal cod.

Duden Dictionary

Quackelei

Qua cke lei Substantiv, feminin landschaftlich , die |Quackel ei |ständiges, törichtes Reden

Quackeler

Qua cke ler Substantiv, maskulin landschaftlich , der Quackler |Qu a ckeler |jemand, der quackelt

quackeln

qua ckeln schwaches Verb landschaftlich, besonders norddeutsch umgangssprachlich |qu a ckeln |schwaches Verb; Perfektbildung mit »hat « zu quaken quatschen 1a

Quackler

Quack ler Substantiv, maskulin landschaftlich , der Quackeler |Qu a ckler |jemand, der quackelt

Quacksalber

Quack sal ber Substantiv, maskulin abwertend , der Quacksalberin |Qu a cksalber |der Quacksalber; Genitiv: des Quacksalbers, Plural: die Quacksalber niederländisch kwakzalver, eigentlich = prahlerischer Salbenverkäufer, zu: kwacken = schwatzen, prahlen und zalven = salben Arzt o. Ä., der mit obskuren Mitteln und Methoden Krankheiten zu heilen versucht

Quacksalberei

Quack sal be rei Substantiv, feminin abwertend , die |Quacksalber ei |Behandlung von Krankheiten nach Art eines Quacksalbers

Quacksalberin

Quack sal be rin Substantiv, feminin , die |Qu a cksalberin |weibliche Form zu Quacksalber

quacksalberisch

quack sal be risch Adjektiv abwertend |qu a cksalberisch |in der Art eines Quacksalbers

quacksalbern

quack sal bern schwaches Verb abwertend |qu a cksalbern |schwaches Verb; Perfektbildung mit »hat « in der Art eines Quacksalbers Krankheiten behandeln

Sanseido Wisdom Dictionary

quack

quack 1 /kwæk /〖擬音語〗動詞自動詞 1 〈アヒルガチョウが〉ガーガー鳴く .2 ｟くだけて｠〈人が〉ギャーギャーわめく .名詞 C (アヒルガチョウの )ガーガー [グワッグワッ ](という鳴き声 ); (人の )ペチャクチャ (というおしゃべり ).

quack

quack 2 名詞 C ｟くだけてけなして｠1 やぶ医者 ; ｟英豪｠医者 .2 いかさま師, いんちき野郎 .形容詞やぶの, いんちきな ▸ quack cures [remedies ]いんちき療法

quackery

quack er y /kwǽk (ə )ri /名詞 U ｟くだけて非難して｠いんちき療法, えせ医療行為 ; いかさま行為 .