Meaning: the practice of pretending to be a doctor

Part of speech: noun

Example: Quackery can lead to serious health risks.

Category: Medicine › Fraud

Meaning: having four angles or corners

Part of speech: adjective

Example: The quadrangular shape of the building is unique.

Category: Geometry

Meaning: relating to a four-channel sound system

Part of speech: adjective

Example: The quadraphonic sound system enhances the listening experience.

Category: Technology › Audio

Meaning: meaning four

Part of speech: prefix

Example: The term 'quadrilateral' uses the prefix quadri-.

Category: Language › Prefixes

Meaning: a dance for four couples

Part of speech: noun

Example: They performed a quadrille at the ball.

Category: Arts › Dance

Meaning: relating to a four-channel audio system

Part of speech: adjective

Example: The quadrophonic setup provides immersive sound.

Category: Technology › Audio

Meaning: to drink deeply

Part of speech: verb

Example: He quaffed his drink in one go.

Category: Food & Drink › Beverages

Synonyms: gulp

Meaning: a difficult or precarious situation

Part of speech: noun

Example: He found himself in a quagmire of debt.

Category: General › Situations

Synonyms: predicament

Meaning: a member of the Religious Society of Friends

Part of speech: noun

Example: The Quaker community values peace and simplicity.

Category: Religion › Christianity

Meaning: relating to the quality of something

Part of speech: adjective

Example: The study focused on qualitative research methods.

Category: Research › Methods

Meaning: a feeling of unease or doubt

Part of speech: noun

Example: She had a qualm about the decision.

Category: Emotions › Doubt

Synonyms: misgiving

Meaning: a state of uncertainty or perplexity

Part of speech: noun

Example: He was in a quandary about which job to take.

Category: General › Situations

Synonyms: dilemma

Meaning: to measure or express the quantity of something

Part of speech: verb

Example: It's difficult to quantify the impact of climate change.

Category: Science › Measurement

Synonyms: measure

Meaning: relating to the measurement of quantity

Part of speech: adjective

Example: Quantitative research uses statistical methods.

Category: Research › Methods

Meaning: eager to argue or quarrel

Part of speech: adjective

Example: His quarrelsome nature made him unpopular.

Category: General › Personality

Synonyms: argumentative

Meaning: a day when rent is due, typically every three months

Part of speech: noun

Example: Rent is due on quarter day.

Category: Finance › Payments

Meaning: the part of a ship's deck reserved for officers

Part of speech: noun

Example: The captain stood on the quarter deck.

Category: Nautical › Ships

Meaning: an officer responsible for the supply of equipment

Part of speech: noun

Example: The quarter master organized the supplies for the mission.

Category: Military › Logistics

Meaning: each of four equal groups in a data set

Part of speech: noun

Example: The data was divided into quartiles for analysis.

Category: Statistics

Meaning: To reject or void something, especially a legal decision.

Part of speech: verb

Example: The judge decided to quash the previous ruling.

Synonyms:

• overturn
• suppress

Antonyms:

• approve
• support

Meaning: The area next to a quay.

Part of speech: noun

Example: The quay side was bustling with activity.

Category: Transportation › Maritime

Synonyms:

• dockside
• wharf side

Meaning: The female leader of a group, especially in a social context.

Part of speech: noun

Example: She is the queen bee of the social scene.

Category: Social

Synonyms:

• leader
• dominant female

Meaning: To suppress or put an end to something, often by force.

Part of speech: verb

Example: The police were called to quell the riot.

Category: Politics

Synonyms:

• suppress
• calm

Antonyms:

• incite
• provoke

Meaning: A person who prepares and asks questions in a quiz or game.

Part of speech: noun

Example: The question master was well-prepared for the trivia night.

Category: Education

Synonyms:

• quizmaster
• host

Meaning: A short question added at the end of a statement.

Part of speech: noun

Example: In English, we often use a question tag for confirmation.

Category: Language › Grammar

Synonyms: tag question

Meaning: The act of moving ahead of others in a queue.

Part of speech: noun

Example: Queue-jumping is considered rude.

Category: Social

Synonyms: cutting in line

Meaning: Happening very quickly or in rapid succession.

Part of speech: adjective

Example: The quick fire questions kept the audience engaged.

Category: General

Synonyms:

• rapid
• fast-paced

Meaning: A loose, wet sand that can trap objects or people.

Part of speech: noun

Example: He struggled to escape from the quicksand.

Category: Nature

Synonyms: sinking sand

Meaning: A lively dance in quick tempo.

Part of speech: noun

Example: They performed a quickstep at the dance competition.

Category: Arts › Dance

Synonyms:

• dance
• step

Meaning: Able to think and respond quickly.

Part of speech: adjective

Example: She is known for her quick-witted remarks.

Category: Personality

Synonyms:

• sharp
• clever

Antonyms:

• slow
• dull

Meaning: To make or become quiet.

Part of speech: verb

Example: Please quieten down during the presentation.

Category: General

Synonyms:

• calm
• silence

Antonyms:

• loud
• disturb

Meaning: related to rabbis or their teachings

Part of speech: adjective

Example: He studied rabbinical texts for years.

Category: Religion › Judaism

Meaning: a network of burrows where rabbits live

Part of speech: noun

Example: The rabbit warren was hidden in the bushes.

Category: Nature › Animals

Meaning: an acronym for various organizations or terms

Part of speech: acronym

Example: RAC stands for 'Regional Advisory Committee'.

Category: Business

Meaning: the standard price for a service or product

Part of speech: noun

Example: The hotel charged the rack rate for the room.

Category: Business › Finance

Meaning: a type of gear mechanism

Part of speech: noun

Example: The rack-and-pinion system is used in steering.

Category: Technology › Engineering

Meaning: suggestive or slightly indecent

Part of speech: adjective

Example: The book had a racy cover.

Category: Arts › Literature

Synonyms: risqué

Meaning: a device used to catch speeding vehicles

Part of speech: noun

Example: The police set up a radar trap on the highway.

Category: Law › Traffic Law

Meaning: a unit of angle measurement

Part of speech: noun

Example: One radian is approximately 57.3 degrees.

Category: Mathematics

Meaning: a type of leafy vegetable

Part of speech: noun

Example: Radicchio adds a bitter flavor to salads.

Category: Food › Vegetables