quack
quack — noun
- quacksingular
- quacksplural
1. a fake doctor — someone with no real medical training who tricks sick people int
a fake doctor — someone with no real medical training who tricks sick people into paying for treatments that do not work, and may even harm them.
The court fined the quack who sold sugar pills as a cancer cure to dying patients.
the quack who + relative clause
Reema's grandmother spent her savings on potions from a quack who promised to cure her arthritis.
potions/treatments from a quack
Online quacks now sell fake immune-boost drops on social media to nervous parents.
Tunde warned his neighbours that the man running the clinic in the market was a quack.
Before regulation, town fairs were full of quacks selling bottles of coloured water as miracle medicine.
文法句型
a/the quack
quack + noun (remedy, cure)
用法筆記
Strongly negative and accusatory; only used when the speaker believes the person is genuinely fraudulent or dangerously unqualified. Often modifies another medical noun, as in 'quack doctor', 'quack remedy', or 'quack cure'.
常見錯誤
2. a casual, slightly humorous British word for any doctor, used between friends or
a casual, slightly humorous British word for any doctor, used between friends or family without implying the doctor is fake.
Dario's father told him to see the quack about his sore knee before the football match.
see the quack about + symptom
I'll pop down to the quack on Friday to get my flu jab.
informal British: pop down to the quack
Otis said the quack at the village surgery had given him pills for his back pain.
Eli's mum rang the quack as soon as the children's fevers passed forty degrees.
文法句型
see/go to the quack
用法筆記
Distinguish from sense 1: here 'the quack' is jokey shorthand for one's own real doctor, like calling a teacher 'the boss'. Mainly British, especially older speakers. Tone is friendly, not accusing.
常見錯誤
3. the short, loud noise produced by a duck, usually repeated several times in a ro
the short, loud noise produced by a duck, usually repeated several times in a row.
Léa heard a single loud quack from the reeds and knew the ducklings had returned to the pond.
a single loud quack from + place
The cheerful quacks of the ducks woke Min before her alarm clock rang.
the quacks of + duck noun
Caio recorded the quack on his phone to send to his little sister back home.
Each quack echoed across the empty park at dawn.
The toy duck made a tinny quack whenever Indra squeezed its belly.
文法句型
a quack
the quack of + noun
用法筆記
Almost always concrete and countable. Can describe the sound of real ducks, toy ducks, or imitations. The verb form (sense verb/1) is far more common than the noun.
quack — verb
- quackpresent simple I / you / we / they
- quacks3rd person singular
- quacking-ing form
- quackedpast simple
1. if a duck quacks, it makes its short, loud, repeated noise.
if a duck quacks, it makes its short, loud, repeated noise.
The mother duck quacked loudly when Mert walked too close to her ducklings.
subject = duck; quack + loudly/softly
Three ducks quacked in chorus as Christopher tossed pieces of bread into the lake.
intransitive: ducks quacked
A lone duck quacked from the far side of the pond all through the night.
The plastic toy quacks when you press its back.
文法句型
[duck] quacks
quack + adverb
用法筆記
Almost always intransitive. Speakers occasionally apply it to humans imitating ducks or to toys that produce the sound, but never to other birds (which 'honk', 'call', or 'cry').
常見錯誤
2. to behave like a fake doctor by selling fake cures or giving medical advice with
to behave like a fake doctor by selling fake cures or giving medical advice without proper training, usually for money.
Zayd's uncle quacked for years at country fairs before the inspectors finally caught up with him.
quacked for + duration + at + place
Several wellness influencers are essentially quacking online while wearing white coats for the camera.
quacking online (modern extension)
The travelling salesman served two years in prison for quacking about cancer cures to terminally ill patients.
In Victorian London, dozens of men quacked openly in the markets without any fear of arrest.
- swindle
broader; covers cheating in any field, not just medicine
文法句型
quack + (about something)
用法筆記
Quite rare in modern English; the noun form (sense noun/1) is far more common. Used mainly in historical writing or when a writer wants a sharply disapproving tone. The subject is always a person presenting themselves as a medical authority.
quack — adjective
- quackpositive
- quackercomparative
- quackestsuperlative
1. describing medical treatments, advice, or people that are fake, untrained, or ba
describing medical treatments, advice, or people that are fake, untrained, or based on no real science.
The journalist's article exposed quack treatments being sold to cancer patients online.
quack + treatments/cures/remedies
Reema's grandfather wasted his pension on quack therapies that promised to restore his eyesight.
quack + therapy/therapies
The clinic was shut down after inspectors found quack equipment in every consulting room.
Many websites still promote quack advice about which vitamins prevent serious illness.
- bogus
general word for anything fake; broader scope than medicine
- fraudulent
formal; emphasises the intent to deceive
- qualified
trained and certified, the opposite of a quack practitioner
文法句型
quack + medical noun
用法筆記
Attributive only — sits before a noun, never after 'be' or another linking verb. The following noun is almost always something from the medical field (treatment, remedy, cure, doctor, therapy, advice, science).