quack

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quack¹

  • /kwæk/

Rhymes with -æk

Where it comes from

From Middle English *quacken, queken (“to croak like a frog; make a noise like a duck, goose, or quail”), from quack, qwacke, quek, queke (“quack”, interjection and noun), also kek, keke, whec-, partly of imitative origin and partly from Middle Dutch quacken (“to croak, quack”), from Old Dutch *kwaken (“to croak, quack”), from Proto-West Germanic *kwakōn, from Proto-Germanic *kwakaną, *kwakōną (“to croak”), of imitative origin. Cognate with Saterland Frisian kwoakje, kwaakje (“to quack”), Middle Low German quaken (“to quack, croak”), German quaken (“to quack, croak”), Danish kvække (“to croak”), Swedish kväka (“to croak, quackle”), Norwegian kvekke (“to croak”), Icelandic kvaka (“to twitter, chirp, quack”).

noun quacks · quaake

  1. The vocalisation made by a duck. Did you hear that duck make a quack?

verb quacks · quacking · quacked · quaake

  1. Of a duck, to make its characteristic vocalisation. The more breadcrumbs I threw on the ground, the more they quacked.
  2. To make a sound similar to the quack of a duck.
  3. intransitive Of a queen bee: to make a high-pitched sound during certain stages of development.

interjection quaake

  1. A duck's quack.

quack²

  • /kwæk/

Rhymes with -æk

Where it comes from

Clipping of quacksalver (see there for more), of Dutch origin; ultimately related to Etymology 1 above.

noun quacks

  1. derogatory A fraudulent healer, especially a bombastic peddler in worthless treatments, a doctor who makes false diagnoses for monetary benefit, or an untrained or poorly trained doctor who uses fraudulent credentials to attract patients That doctor is nothing but a lousy quack!
  2. derogatory, figuratively Any similar charlatan or incompetent professional. The very quaik of faſhions, the very hee that / VVeares a Steletto on his chinne.
  3. derogatory, humorous, mildly, slang Any doctor. That quack wants me to quit smoking, eat less, and start exercising. The nerve!

Similar: snake-oil salesman, medicaster, quacksalver, pharmacopole

verb quacks · quacking · quacked

  1. To practice or commit quackery (fraudulent medicine). […] it is incredible, and scarce to be imagin’d, how the Posts of Houses, and Corners of Streets were plaster’d over with Doctors Bills, and Papers of ignorant Fellows; quacking and tampering in Physick, and inviting the People to come to them for Remedies;
  2. obsolete To make vain and loud pretensions. Seek out for Plants with Signatures To Quack of Universal Cures

    Similar: boast

adjective more quack · quacker · most quack · quackest

  1. Falsely presented as having medicinal powers. Don't get your hopes up; that's quack medicine!

Thesaurus

Closest in meaning: unqualified, mountebank, charlatan, faker, fake, fraud, hack, healer, quaake, quackism, queak, quackhood, cack, cluck, queek, quawk

Translations

Every language

noun sound made by a duck

Españolcuac, cua
한국어꽥꽥 kkwaekkkwaek
日本語ガー ガー gā-gā, クェッ クェッ kuek-kuek, クワッ クワッ kuwak-kuwak
中文嘎 gá, 呱 guā
Portuguêsquá, quac, qué, quém
Françaiscoin-coin
DeutschQuaken
Italianoqua qua
Ελληνικάπα πα
Românămăcăit, măcănit, măcăitură
Русскийкря krja, кря-кря́ krja-krjá, кря́канье krjákanʹje
Tiếng Việtcạc cạc, cạp cạp
العربيةبَطْبَطَة baṭbaṭa, زَبْط zabṭ

verb to make a noise like a duck

Españolgraznar, parpar
日本語ガーガーと鳴く gā-gā to naku, ガヤガヤしゃべる gayagaya shaberu
Portuguêsgrasnar, grasnir, grassitar, gracitar
Françaiscancaner
Deutschquaken
Italianofare qua-qua, anatrare
Românămăcăi
Русскийкря́кать krjákatʹ, кря́кнуть krjáknutʹ
العربيةزَبَطَ zabaṭa

intj duck's sound

中文嘎嘎 gāgā
Deutschquak
Românămac

noun fraudulent or incompetent doctor of medicine

Españolmatasanos
日本語藪医者 yabuisha, もぐりの医者 moguri no isha
中文庸醫 /庸医 yōngyī, 江湖醫生 /江湖医生 jiānghú yīshēng
हिन्दीझोलाछाप jholāchāp
Portuguêsmata-sanos
Françaischarlatan, charlatane
DeutschQuacksalber, Kurpfuscher
Ελληνικάκομπογιαννίτης kompogiannítis, αλμπάνης almpánis
Русскийконова́л konovál, шарлата́н šarlatán
Tiếng Việtlang băm
עבריתרוֹפֵא אֱלִיל rofé elíl

noun charlatan

Españolcharlatán
日本語ペテン師 peten-shi
हिन्दीझोलाछाप jholāchāp
Portuguêscharlatão
Françaischarlatan, charlatane
DeutschQuacksalber, Quacksalberin
Italianociarlatano, imbonitore, pataccaro
Ελληνικάτσαρλατάνος tsarlatános
Русскийшарлата́н šarlatán

noun doctor

Españolcurandero
Portuguêscurandeiro
Françaistoubib
Italianomediconzolo
Русскийзнахарь znaxarʹ

adj falsely presented as having medicinal powers

Italianoempirico

Talk about this word

Cite this
MLA

"quack." Wiktionary, via Micwyn, micwyn.com/word/quack. Accessed 6 Nov. 2026.

APA

quack. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/quack

Chicago

"quack." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/quack.

BibTeX
@misc{quack_2026,
  title = {quack},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/quack},
  urldate = {2026-11-06}
}