quack |kwæk| — an untrained person who pretends to be a physician and who dispenses medical advice

quack-quack |ˈkwæk kwæk| — child's word for a duck

quackery |ˈkwækərɪ| — medical practice and advice based on observation and experience in ignorance of scientific findings

quackish  — Like a quack (fraudulent doct), or characteristic of quackery.

quackle |ˈkwækl| — (intransitive, archaic) To make a quacking sound.

quacksalver |ˈkwækˌsælvʌr| — (archaic) One falsely claiming to possess medical or other skills, especially one who dispenses potions, ointments, etc. supposedly having curative powers.

quacky  — (of a voice or sound) That resembles the quack of a duck.

quad |kwɑːd| — one of four children born at the same time from the same pregnancy

quadragenarian |ˌkwɑːdrədʒɪˈneriːən| — between the ages of 40 and 49; in one's fifth decade

Quadragesima |kwɑːdrəˈdʒesəmə| — the first Sunday in Lent

quadragesimal |ˌkwɑːdrəˈdʒesɪməl| — Belonging to Lent; used in Lent; Lenten.

quadrangle |ˈkwɑːdræŋɡl| — a four-sided polygon

quadrangular |kwɑːˈdræŋɡjələr| — of or relating to or shaped like a quadrangle

quadrant |ˈkwɑːdrənt| — a quarter of the circumference of a circle

quadrat |ˈkwɑːdrət| — (sciences) An area of land, marked for studying its plants, animals, soil, natural processes, etc. While originally rectangular, modern quadrats can be rectangular, circular, irregular, etc. (e.g.: Krebs, C.J., 1999. Ecological Methodology. Addison-Welsey

quadrate |ˈkwɑːdreɪt| — a cubelike object

quadratic |kwɑːˈdrætɪk| — an equation in which the highest power of an unknown quantity is a square

quadrature |ˈkwɑːdrətʃər| — the construction of a square having the same area as some other figure

quadrennial |kwaˈdrenɪəl| — Happening every four years.

quadriceps |ˈkwɑːdrɪseps| — a muscle of the thigh that extends the leg

quadriga |kwɑːˈdraɪɡə| — (historical) A Roman racing chariot drawn by four horses abreast.

quadrigae |kwəˈdriːɡiː| — plural form of quadriga

quadrilateral |ˌkwɑːdrɪˈlætərəl| — a four-sided polygon

quadrille |kwəˈdrɪl| — music for dancing the quadrille

quadrillion |kwɑːˈdrɪljən| — the number that is represented as a one followed by 24 zeros

quadripartite |kwɑːdrəˈpɑːrtaɪt| — involving four parties

quadripole |ˈkwɒdrɪpəʊl| — An electrical circuit that has two pairs of external terminals

quadrisyllabic  — Having four syllables.

quadrisyllable |ˈkwɑːdrɪˌsɪləbəl| — A word of four syllables.

quadrivalent |ˌkwɑːdriːˈveɪlənt| — (chemistry) Having a valence of four.

quadroon |kwɑːˈdruːn| — an offspring of a mulatto and a white parent; a person who is one-quarter black

quadrumanous |kwɒˈdruːmənəs| — Having four feet whose first digits are opposable; applies to all non-human primates.

quadruped |ˈkwɑːdrʊped| — an animal especially a mammal having four limbs specialized for walking

quadrupedal |kwɑːˈdruːpɪdl| — having four feet

quadruple |kwɑːˈdruːpl| — a set of four similar things considered as a unit

quadruplet |ˈkwɑːdrʊplət| — the cardinal number that is the sum of three and one

quadruplets |ˈkwɒdruːpləts| — plural form of quadruplet

quadruplicate |kwɒˈdruːplɪkeɪt| — any four copies; any of four things that correspond to one another exactly

quads |ˈkwɑːdz| — plural form of quad

quaere |ˈkwɪərɪ| — (archaic) To ask or query; used imperatively to introduce a question or signify doubt.

quaestor |ˈkwestər| — any of several public officials of ancient Rome (usually in charge of finance and administration)

quaff |kwæf| — a hearty draft

quag |kwaɡ| — a soft wet area of low-lying land that sinks underfoot

quaggy |ˈkwæɡiː| — (of soil) soft and watery

quagmire |ˈkwæɡmaɪər| — a soft wet area of low-lying land that sinks underfoot

quail |kweɪl| — flesh of quail; suitable for roasting or broiling if young; otherwise must be braised

quail-pipe |ˈkweɪlpaɪp| — Of or relating to a quail pipe.

quaint |kweɪnt| — strange in an interesting or pleasing way

quaintness |ˈkweɪntnəs| — the quality of being quaint and old-fashioned

quake |kweɪk| — shaking and vibration at the surface of the earth resulting from underground movement along a fault plane or from volcanic activity

Quaker |ˈkweɪkər| — a member of the Religious Society of Friends founded by George Fox (the Friends have never called themselves Quakers)

quaker-gun |ˈkweɪkəˈɡʌn| — Alternative form of Quaker gun.

Quakeress |ˈkweɪkərɪs| — (dated) A female Quaker.

Quakerish |ˈkweɪkərɪʃ| — (dated) Suggesting or pertaining to the Quakers.

Quakerism |ˈkweɪkərɪzm| — the theological doctrine of the Society of Friends characterized by opposition to war and rejection of ritual and a formal creed and an ordained ministry

quaking |ˈkweɪkɪŋ| — The action of the verb to quake.

quaky |ˈkweɪkiː| — Inclined to quake; tremulous.

qualification |ˌkwɑːlɪfɪˈkeɪʃn| — an attribute that must be met or complied with and that fits a person for something

qualificatory |ˈkwɑːləfəkeɪtəriː| — That serves as qualification

qualified |ˈkwɑːlɪfaɪd| — holding appropriate documentation and officially on record as qualified to perform a specified function or practice a specified skill

qualifier |ˈkwɑːlɪfaɪər| — a contestant who meets certain requirements and so qualifies to take part in the next stage of competition

qualify |ˈkwɑːlɪfaɪ| — prove capable or fit; meet requirements

qualifying |ˈkwɑːləˌfaɪɪŋ| — the grammatical relation that exists when a word qualifies the meaning of the phrase

qualitative |ˈkwɑːləteɪtətɪv| — involving distinctions based on qualities

qualitatively |ˌkwɑːləˈteɪtɪvlɪ| — in a qualitative manner

quality |ˈkwɑːlətɪ| — an essential and distinguishing attribute of something or someone

quality-of-life  — The general well-being of individuals and societies, including not only wealth and employment, but also the built environment, physical and mental health, education, recreation and leisure time, and social belonging.

qualm |kwɑːm| — uneasiness about the fitness of an action

qualmish |ˈkwɑːmɪʃ| — Affected with qualms; queasy, nauseous. [from 16th c.]

qualmishness |ˈkwɑːmɪʃnes| — The quality of being qualmish.

quandary |ˈkwɑːndərɪ| — a situation from which extrication is difficult especially an unpleasant or trying one

quant |ˈkwænt| — (finance) A quantitative analyst.

quanta |ˈkwɑːntə| — plural form of quantum

quantifiable |ˌkwɑːntəˈfaɪəbel| — capable of being quantified

quantification |ˌkwɑːntəfəˈkeɪʃən| — a limitation imposed on the variables of a proposition (as by the quantifiers `some' or `all' or `no')

quantify |ˈkwɑːntɪfaɪ| — use as a quantifier

quantitative |ˈkwɑːntəteɪtɪv| — expressible as a quantity or relating to or susceptible of measurement

quantitatively |ˌkwɑːntəˈteɪtəvlɪ| — in a quantitative manner

quantity |ˈkwɑːntətɪ| — how much there is or how many there are of something that you can quantify

quantum |ˈkwɑːntəm| — a discrete amount of something that is analogous to the quantities in quantum theory

quarantine |ˈkwɔːrəntiːn| — enforced isolation of patients suffering from a contagious disease in order to prevent the spread of disease

quark |kwɑːrk| — (physics) hypothetical truly fundamental particle in mesons and baryons; there are supposed to be six flavors of quarks (and their antiquarks), which come in pairs; each has an electric charge of +2/3 or -1/3

quarrel |ˈkwɔːrəl| — an angry dispute

quarreling |ˈkwɑːrəlɪŋ| — Present participle of quarrel.

quarrelling |ˈkwɒrəlɪŋ| — Present participle of quarrel.

quarrelsome |ˈkwɔːrəlsəm| — given to quarreling

quarry |ˈkwɔːrɪ| — a person who is the aim of an attack (especially a victim of ridicule or exploitation) by some hostile person or influence

quart |kwɔːrt| — a United States liquid unit equal to 32 fluid ounces; four quarts equal one gallon

quartan |ˈkwɔːrtn| — a malarial fever that recurs every fourth day

quarter |ˈkwɔːrtər| — one of four equal parts

quarter-century  — a period of 25 years

quarter-day |ˈkwɔːrtər deɪ| — Each of the four days customarily regarded as starting a new quarter year.

quarter-deck |ˈkwɔːrtər dek| — Alternative spelling of quarterdeck.

quarterage |ˈkwɔːrtərɪdʒ| — a quarterly payment or allowance, tax, pension, or wage paid or received

quarterback |ˈkwɔːrtərbæk| — (football) the person who plays quarterback

quarterdeck |ˈkwɔːrtərdek| — the stern area of a ship's upper deck

quartering |ˈkwɔːrtərɪŋ| — a coat of arms that occupies one quarter of an escutcheon; combining four coats of arms on one shield usually represented intermarriages

quarterly |ˈkwɔːrtərlɪ| — a periodical that is published every quarter (or four issues per year)

quartermaster |ˈkwɔːrtərmæstər| — an army officer who provides clothing and subsistence for troops

quartern |kwɔːrtən| — one of four equal parts

quarters |ˈkwɔːrtərz| — housing available for people to live in

quartet |kwɔːrˈtet| — the cardinal number that is the sum of three and one

quartette |kwɔːrˈtet| — four performers or singers who perform together

quartile |ˈkwɔːrtaɪl| — (statistics) any of three points that divide an ordered distribution into four parts each containing one quarter of the scores

quarto |ˈkwɔːrtəʊ| — the size of a book whose pages are made by folding a sheet of paper twice to form four leaves

quartz |kwɔːrts| — colorless glass made of almost pure silica

quartzose  — relating to or made of quartz

quasar |ˈkweɪzɑːr| — a starlike object that may send out radio waves and other forms of energy; many have large red shifts

quash |kwɔːʃ| — put down by force or intimidation

quasi |ˈkwɑːsɪ| — having some resemblance

Quasimodo |kæzɪˈmɒdəʊ| — The first Sunday after Easter

quassia |ˈkwɑːʃɪə| — a bitter compound used as an insecticide and tonic and vermifuge; extracted from the wood and bark of trees of the genera Quassia and Picrasma

quaternary |ˈkwɑːtərˌnerɪ| — last 2 million years

quaternion |kwəˈtɜːrniːən| — the cardinal number that is the sum of three and one

quatrain |ˈkwɑːtreɪn| — a stanza of four lines

quattrocento |ˌkwætrəʊˈtʃentəʊ| — the 15th century in Italian art and literature

quaver |ˈkweɪvər| — a tremulous sound

quavering |ˈkweɪvərɪŋ| — (of the voice) quivering as from weakness or fear

quavery |ˈkweɪvəriː| — Apt to quaver.

quay |kiː| — wharf usually built parallel to the shoreline

quayage |ˈkiːɪdʒ| — a fee charged for the use of a wharf or quay

quayside |ˈkiːsaɪd| — An area alongside a quay

qubit  — (computing) A quantum bit; the unit of quantum information; a bit in a quantum computer capable of being in a state of superposition.

quean |kwiːn| — A woman, now especially an impudent or disreputable woman; a prostitute. [from 10th c.]

queasily |ˈkwiːzɪlɪ| — in a queasy manner

queasiness |ˈkwiːzɪnəs| — a mild state of nausea

queasy |ˈkwiːzɪ| — causing or able to cause nausea

quebracho |kəˈbrɑːtʃəʊ| — (botany) A Chilean apocynaceous tree, Aspidosperma quebracho

queen |kwiːn| — the only fertile female in a colony of social insects such as bees and ants and termites; its function is to lay eggs

queenhood |ˈkwiːnˌhʊd| — The state, rank, or status of a queen.

queening |ˈkwiːnɪŋ| — Present participle of queen.

queenlike  — having the rank of or resembling or befitting a queen

queenliness  — The state of being queenly.

queenly |ˈkwiːnlɪ| — having the rank of or resembling or befitting a queen

queer |kwɪr| — offensive term for a homosexual man

queerly |ˈkwɪəlɪ| — in a strange manner

queerness |ˈkwɪənəs| — a strange attitude or habit

quell |kwel| — suppress or crush completely

quench |kwentʃ| — satisfy (thirst)

quencher |ˈkwentʃər| — Something that quenches (thirst, fire, etc.)

quenching |ˈkwentʃɪŋ| — the act of extinguishing; causing to stop burning

quenchless |ˈkwentʃləs| — impossible to quench

quenelle |kəˈnel| — A light dumpling made of lightly spiced minced meat or fish bound with egg and poached.

quercitron |ˈkwɜːrˌsɪtrən| — a yellow dye made from the bark of the quercitron oak tree

querist |ˈkwɪrəst| — A person who asks questions

quern |kwɜːrn| — a primitive stone mill for grinding corn by hand

querulous |ˈkwerələs| — habitually complaining

query |ˈkwɪrɪ| — an instance of questioning

quest |kwest| — a search for an alternative that meets cognitive criteria

question |ˈkwestʃən| — an instance of questioning

question-mark |ˈkwestʃənˈmɑːrk| — The punctuation mark “?", used at the end of a sentence to indicate a question.

questionable |ˈkwestʃənəbl| — able to be refuted

questionably |ˈkwestʃənəblɪ| — in a questionable and dubious manner

questionary |ˈkwestʃ(ə)n(ə)rɪ| — A questionnaire.

questioner |ˈkwestʃənər| — someone who asks a question

questioning |ˈkwestʃənɪŋ| — a request for information

questionless |ˈkwestʃənlɪs| — (rare) Certain; indubitable; unquestionable; not admitting of question or doubt.

questionnaire |ˌkwestʃəˈner| — a form containing a set of questions; submitted to people to gain statistical information

questor  — Alternative spelling of quaestor.

quetzal |ˈketsɑːl| — the basic unit of money in Guatemala; equal to 100 centavos

queue |kjuː| — a line of people or vehicles waiting for something

quibble |ˈkwɪbl| — an evasion of the point of an argument by raising irrelevant distinctions or objections

quibbler |ˈkwɪblər| — a disputant who quibbles; someone who raises annoying petty objections

quibbling |ˈkwɪbəlɪŋ| — Present participle of quibble.

quick |kwɪk| — any area of the body that is highly sensitive to pain (as the flesh underneath the skin or a fingernail or toenail)

quick-change |kwɪk ˈtʃeɪndʒ| — adept at changing from one thing to another especially changing costumes

quick-freeze |kwiːk ˈfriːz| — freeze rapidly so as to preserve the natural juices and flavors

quick-sighted |kwɪk ˈsaɪtɪd| — having very keen vision

quick-witted |ˈˌkwɪk ˈˌwɪdɪd| — mentally nimble and resourceful

quicken |ˈkwɪkən| — move faster

quicker |ˈkwɪkər| — more quickly

quickest |ˈkwɪkəst| — most quickly

quickie |ˈkwɪkɪ| — hurried repair

quicklime |ˈkwɪklaɪm| — a white crystalline oxide used in the production of calcium hydroxide

quickly |ˈkwɪklɪ| — with speed

quickness |ˈkwɪknəs| — skillful performance or ability without difficulty

quicksand |ˈkwɪksænd| — a treacherous situation that tends to entrap and destroy

quickset |ˈkwɪkset| — cuttings of plants set in the ground to grow as hawthorn for hedges or vines

quicksilver |ˈkwɪksɪlvər| — a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures

quicksilvering  — Present participle of quicksilver.

quid |kwɪd| — the basic unit of money in Great Britain and Northern Ireland; equal to 100 pence

quiddity |ˈkwɪdɪtɪ| — an evasion of the point of an argument by raising irrelevant distinctions or objections

quidnunc |ˈkwɪdnʌŋk| — a person who meddles in the affairs of others

quiescence |kwaɪˈesns| — a state of quiet (but possibly temporary) inaction

quiescency |kwaɪˈesnsɪ| — a state of quiet (but possibly temporary) inaction

quiescent |kwɪˈesnt| — not active or activated

quiet |ˈkwaɪət| — a period of calm weather

quieten |ˈkwaɪətn| — become quiet or quieter

quietism |ˈkwaɪətɪzəm| — a form of religious mysticism requiring withdrawal from all human effort and passive contemplation of God

quietly |ˈkwaɪətlɪ| — with low volume

quietness |ˈkwaɪətnəs| — the property of making no sound

quietude |ˈkwaɪətuːd| — a state of peace and quiet

quietus |kwaɪˈiːtəs| — euphemisms for death (based on an analogy between lying in a bed and in a tomb)

quiff |kwɪf| — a prominent forelock (especially one brushed upward from the forehead)

quill |kwɪl| — pen made from a bird's feather

quilled  — having quills or similar structures

quillet |ˈkwɪlɪt| — A quibble, an evasive distinction.

quilling |ˈkwɪlɪŋ| — the art of creating decorative designs from thin strips of curled paper

quilt |kwɪlt| — bedding made of two layers of cloth filled with stuffing and stitched together

quilted |ˈkwɪltəd| — made of layers of fabric held together by patterned stitching

quilting |ˈkwɪltɪŋ| — stitching through layers of fabric and a filling so as to create a design

quinary |ˈkwaɪnəriː| — Of fifth rank or order.

quince |kwɪns| — small Asian tree with pinkish flowers and pear-shaped fruit; widely cultivated

quincentenary |ˌkwɪnsenˈtenerɪ| — the 500th anniversary (or the celebration of it)

quincunx |ˈkwɪŋkəŋks| — An arrangement of five units in a pattern corresponding to the five-spot on dice, playing cards, or dominoes.

quinine |kwɪˈniːn| — a bitter alkaloid extracted from chinchona bark; used in malaria therapy

quininize |ˈkwɪniːnaɪz| — (obsolete) To treat with quinine.

quinism |ˈkwɪnɪzm| — cinchonism

quinoa |ˈkiːnwɑː| — A goosefoot, Chenopodium quinoa, native to the Andes and cultivated for its edible seeds.

quinquagenarian |kwɪŋkwədʒɪˈneriːən| — One who is between the age of 50 and 59, inclusive.

quinquangular  — Having five angles or corners.

quinquennia |kwɪŋˈkwenɪə| — plural form of quinquennium

quinquennial |kwɪnˈkweniːəl| — that happens every five years

quinquennium |kwɪnˈkweniːəm| — a period of five years

quinquina |kwɪŋˈkwaɪnə| — (archaic) Jesuit's bark

quinquivalent |ˌkwɪŋkwəˈveɪlənt| — (chemistry) Having a valence of five.

quinsy |ˈkwɪnzɪ| — a painful pus filled inflammation of the tonsils and surrounding tissues; usually a complication of tonsillitis

quint |kwɪnt| — the cardinal number that is the sum of four and one

quintain |ˈkwɪntn| — (now historical) An object (generally a post or plank on a support) set up as a target to be tilted at in jousting, or otherwise used as target practice. [from 15th c.]

quintal |ˈkwɪn(t)l| — a unit of weight equal to 100 kilograms

quintan |ˈkwɪntn| — (of a fever) recurring after four days (every five days)

quintessence |kwɪnˈtesns| — the fifth and highest element after air and earth and fire and water; was believed to be the substance composing all heavenly bodies

quintessential |ˌkwɪntɪˈsenʃl| — representing the perfect example of a class or quality

quintet |kwɪnˈtet| — a musical composition for five performers

quintette |kwɪnˈtet| — five performers or singers who perform together

quintuple |ˈkwɪntjʊpl| — a set of five similar things considered as a unit

quintuplet |ˈkwɪntʊplət| — the cardinal number that is the sum of four and one

quip |kwɪp| — a witty saying

quire |ˈkwaɪər| — a quantity of paper; 24 or 25 sheets

quirk |kwɜːrk| — a strange attitude or habit

quirky |ˈkwɜːrkɪ| — (informal) strikingly unconventional

quirt |kwərt| — whip with a leather thong at the end

quisle |ˈkwɪzəl| — to be a quisling

quisling |ˈkwɪzlɪŋ| — someone who collaborates with an enemy occupying force

quit |kwɪt| — put an end to a state or an activity

quitch |kwɪtʃ| — (intransitive, now UK, regional) To stir; to move. [from 13th c.]

quitclaim |ˈkwɪtkleɪm| — document transferring title or right or claim to another

quite |kwaɪt| — to a degree (not used with a negative)

quitrent  — A rent reserved in grants of land, by the payment of which the tenant is quit (absolved) from other service.

quits |kwɪts| — on equal terms by payment or requital

quittance |ˈkwɪtns| — a document or receipt certifying release from an obligation or debt

quitter |ˈkwɪtər| — a person who gives up too easily

quitting |ˈkwɪtɪŋ| — Present participle of quit.

quiver |ˈkwɪvər| — an almost pleasurable sensation of fright

quiverful |ˈkwɪvəˌfʊl| — The amount held by a quiver

quivering |ˈkwɪvərɪŋ| — a shaky motion

quixotic |kwɪkˈsɑːtɪk| — not sensible about practical matters; idealistic and unrealistic

quixotism |ˈkwɪksəˌtɪzəm| — quixotic (romantic and impractical) behavior

quixotry |ˈkwɪksətrɪ| — A wild, visionary idea, an eccentric notion or act; a quixotism.

quiz |kwɪz| — an examination consisting of a few short questions

quizzee |kwɪˈziː| — (archaic) One who is quizzed or teased.

quizzical |ˈkwɪzɪkl| — playfully vexing (especially by ridicule)

quizzically |ˈkwɪzɪkəlɪ| — in a quizzical and questioning manner

quizzing-glass |ˈkwɪzɪŋɡlɑːs| — (dated) A monocle.

quoad |ˈkwəʊæd| — (archaic) With respect to.

quod |kwɑːd| — (countable) A quadrangle or court, as of a prison; a prison.

quoin |k(w)ɔɪn| — expandable metal or wooden wedge used by printers to lock up a form within a chase

quoit |kɔɪt| — game equipment consisting of a ring of iron or circle of rope used in playing the game of quoits

quoits |kɔɪts| — a game in which iron rings (or open iron rings) are thrown at a stake in the ground in the hope of encircling it

quondam |ˈkwɑːndæm| — belonging to some prior time

quorum |ˈkwɔːrəm| — a gathering of the minimal number of members of an organization to conduct business

quota |ˈkwəʊtə| — a prescribed number

quotable |ˈkwəʊtəbl| — suitable for or worthy of quotation

quotation |kwəʊˈteɪʃn| — a short note recognizing a source of information or of a quoted passage

quotation-marks |kwəʊˈteɪʃənˈmɑːks| — Symbols used to denote a quotation in writing, written at the beginning and end of the quotation. The symbols vary across languages, and slightly different marks may sometimes be used at the beginning and end of the quotation. See below and quotation mark

quote |kwəʊt| — a punctuation mark used to attribute the enclosed text to someone else

quoted |ˈkwəʊtɪd| — simple past tense and past participle of quote

quotes |kwəʊts| — plural form of quote

quoth |kwəʊθ| — (archaic or literary) Simple past tense of quethe.; said

quotha |ˈkwəʊθə| — (archaic) Indeed; forsooth.

quotidian |kwəʊˈtɪdɪən| — found in the ordinary course of events

quotient |ˈkwəʊʃnt| — the ratio of two quantities to be divided

quotum |ˈkwəʊtəm| — A part or proportion; a fraction; quota.

Quran  — the sacred writings of Islam revealed by God to the prophet Muhammad during his life at Mecca and Medina