| valetudinarian | (noun) weak or sickly person especially one morbidly concerned with his or her health | - |
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| valetudinarianism | (noun) the state of being weak in health or body (especially from old age) | Synonyms: debility, feebleness, frailness, frailty, infirmity |
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| valgus | (noun) a deformity in which there is an abnormal displacement of part of a limb away from the midline of the body | - |
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| valiance | (noun) the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle) | Synonyms: gallantry, heroism, valiancy, valor, valorousness, valour |
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| valiancy | (noun) the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle) | Synonyms: gallantry, heroism, valiance, valor, valorousness, valour |
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| validation | (noun) the act of validating; finding or testing the truth of something | Synonyms: proof, substantiation |
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| (noun) the cognitive process of establishing a valid proof | Synonyms: establishment |
| validity | (noun) the quality of having legal force or effectiveness | Synonyms: validness |
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| (noun) the quality of being valid and rigorous | Synonyms: cogency, rigor, rigour |
| validness | (noun) the quality of having legal force or effectiveness | Synonyms: validity |
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| valine | (noun) an essential amino acid found in proteins; important for growth in children and nitrogen balance in adults | - |
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| valise | (noun) a small overnight bag for short trips | - |
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| vallecula | (noun) (anatomy) any furrow or channel on a bodily structure or part | Synonyms: groove |
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| valley | (noun) a long depression in the surface of the land that usually contains a river | Synonyms: vale |
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| valor | (noun) the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle) | Synonyms: gallantry, heroism, valiance, valiancy, valorousness, valour |
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| valorousness | (noun) the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle) | Synonyms: gallantry, heroism, valiance, valiancy, valor, valour |
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| valour | (noun) the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle) | Synonyms: gallantry, heroism, valiance, valiancy, valor, valorousness |
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| valsartan | (noun) an angiotensin II inhibitor that is used to treat high blood pressure | Synonyms: Diovan |
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| valse | (noun) a ballroom dance in triple time with a strong accent on the first beat | Synonyms: waltz |
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| valuable | (noun) something of value | - |
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| valuableness | (noun) the positive quality of being precious and beyond value | Synonyms: invaluableness, preciousness, pricelessness |
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| valuation | (noun) an appraisal of the value of something | Synonyms: evaluation, rating |
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| (noun) assessed price | - |
| valuator | (noun) one who estimates officially the worth or value or quality of things | Synonyms: appraiser |
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| value | (noun) the quality (positive or negative) that renders something desirable or valuable | - |
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| (noun) relative darkness or lightness of a color | - |
| (noun) a numerical quantity measured or assigned or computed | - |
| (noun) an ideal accepted by some individual or group | - |
| (noun) the amount (of money or goods or services) that is considered to be a fair equivalent for something else | Synonyms: economic value |
| (noun) (music) the relative duration of a musical note | Synonyms: note value, time value |
| valuelessness | (noun) having none of the properties that endow something with value | - |
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| valuer | (noun) someone who assesses the monetary worth of possessions | - |
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| values | (noun) beliefs of a person or social group in which they have an emotional investment (either for or against something) | - |
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| valve | (noun) one of the paired hinged shells of certain molluscs and of brachiopods | - |
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| (noun) the entire one-piece shell of a snail and certain other molluscs | - |
| (noun) control consisting of a mechanical device for controlling the flow of a fluid | - |
| (noun) device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone | - |
| (noun) a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it | - |
| valvelet | (noun) a small valve | Synonyms: valvula, valvule |
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| valvotomy | (noun) incision into a stenosed cardiac valve to relieve the obstruction | Synonyms: valvulotomy |
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| valvula | (noun) a small valve | Synonyms: valvelet, valvule |
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| valvule | (noun) a small valve | Synonyms: valvelet, valvula |
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| valvulitis | (noun) inflammation of a valve (especially of a cardiac valve as a consequence of rheumatic fever) | - |
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| valvulotomy | (noun) incision into a stenosed cardiac valve to relieve the obstruction | Synonyms: valvotomy |
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| vambrace | (noun) cannon of plate armor protecting the forearm | Synonyms: lower cannon |
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| vamp | (noun) piece of leather forming the front part of the upper of a shoe | - |
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| (noun) an improvised musical accompaniment | - |
| (noun) a seductive woman who uses her sex appeal to exploit men | Synonyms: coquette, flirt, minx, prickteaser, tease, vamper |
| vamper | (noun) a seductive woman who uses her sex appeal to exploit men | Synonyms: coquette, flirt, minx, prickteaser, tease, vamp |
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| vampire | (noun) (folklore) a corpse that rises at night to drink the blood of the living | Synonyms: lamia |
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| vampirism | (noun) the actions or practices of a vampire | - |
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| (noun) belief in the existence of vampires | - |
| van | (noun) a truck with an enclosed cargo space | - |
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| (noun) a camper equipped with living quarters | Synonyms: caravan |
| (noun) (Great Britain) a closed railroad car that carries baggage or freight | - |
| (noun) the leading units moving at the head of an army | Synonyms: vanguard |
| (noun) any creative group active in the innovation and application of new concepts and techniques in a given field (especially in the arts) | Synonyms: avant-garde, new wave, vanguard |
| vanadate | (noun) a salt or ester of vanadic acid; an anion containing pentavalent vanadium | - |
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| vanadinite | (noun) a mineral consisting of chloride and vanadate of lead; a source of vanadium | - |
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| vanadium | (noun) a soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite | Synonyms: atomic number 23, V |
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| vancomycin | (noun) an antibiotic (trade name Vancocin) effective against some bacterial infections | Synonyms: Vancocin |
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| vanda | (noun) any of numerous showy orchids of the genus Vanda having many large flowers in loose racemes | - |
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| vandal | (noun) someone who willfully destroys or defaces property | - |
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| vandalism | (noun) willful wanton and malicious destruction of the property of others | Synonyms: hooliganism, malicious mischief |
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| vandyke | (noun) a short pointed beard (named after the artist Anthony Vandyke) | Synonyms: vandyke beard |
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| vane | (noun) the flattened weblike part of a feather consisting of a series of barbs on either side of the shaft | Synonyms: web |
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| (noun) mechanical device attached to an elevated structure; rotates freely to show the direction of the wind | Synonyms: weather vane, weathervane, wind vane |
| (noun) flat surface that rotates and pushes against air or water | Synonyms: blade |
| (noun) a fin attached to the tail of an arrow, bomb or missile in order to stabilize or guide it | - |
| vanguard | (noun) the position of greatest importance or advancement; the leading position in any movement or field | Synonyms: cutting edge, forefront |
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| (noun) the leading units moving at the head of an army | Synonyms: van |
| (noun) any creative group active in the innovation and application of new concepts and techniques in a given field (especially in the arts) | Synonyms: avant-garde, new wave, van |
| vanilla | (noun) a distinctive fragrant flavor characteristic of vanilla beans | - |
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| (noun) a flavoring prepared from vanilla beans macerated in alcohol (or imitating vanilla beans) | Synonyms: vanilla extract |
| (noun) any of numerous climbing plants of the genus Vanilla having fleshy leaves and clusters of large waxy highly fragrant white or green or topaz flowers | - |
| vanillin | (noun) a crystalline compound found in vanilla beans and some balsam resins; used in perfumes and flavorings | - |
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| vanisher | (noun) a person who disappears | - |
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| vanishing | (noun) a sudden disappearance from sight | - |
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| (noun) a sudden or mysterious disappearance | - |
| vanity | (noun) low table with mirror or mirrors where one sits while dressing or applying makeup | Synonyms: dresser, dressing table, toilet table |
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| (noun) the trait of being unduly vain and conceited; false pride | Synonyms: conceit, conceitedness |
| (noun) the quality of being valueless or futile | Synonyms: emptiness |
| (noun) feelings of excessive pride | Synonyms: amour propre, conceit, self-love |
| vanquisher | (noun) someone who is victorious by force of arms | Synonyms: conqueror |
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| vantage | (noun) the quality of having a superior or more favorable position | Synonyms: advantage |
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| (noun) place or situation affording some advantage (especially a comprehensive view or commanding perspective) | - |
| vape | (noun) an electronic cigarette, that produces a nicotine containing vapor | - |
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| vapidity | (noun) the quality of being vapid and unsophisticated | Synonyms: jejuneness, jejunity, tameness, vapidness |
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| vapidness | (noun) the quality of being vapid and unsophisticated | Synonyms: jejuneness, jejunity, tameness, vapidity |
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| vaping | (noun) consumption of a vaporized nicotine solution | - |
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| vapor | (noun) the process of becoming a vapor | Synonyms: evaporation, vaporisation, vaporization, vapour |
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| (noun) a visible suspension in the air of particles of some substance | Synonyms: vapour |
| vaporing | (noun) an instance of boastful talk | Synonyms: brag, bragging, crow, crowing, gasconade, line-shooting |
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| vaporisation | (noun) annihilation by vaporizing something | Synonyms: vaporization |
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| (noun) the process of becoming a vapor | Synonyms: evaporation, vapor, vaporization, vapour |
| vaporiser | (noun) a device that puts out a substance in the form of a vapor (especially for medicinal inhalation) | Synonyms: vaporizer |
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| vaporization | (noun) annihilation by vaporizing something | Synonyms: vaporisation |
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| (noun) the process of becoming a vapor | Synonyms: evaporation, vapor, vaporisation, vapour |
| vaporizer | (noun) a device that puts out a substance in the form of a vapor (especially for medicinal inhalation) | Synonyms: vaporiser |
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| vaporousness | (noun) cloudiness resulting from haze or mist or vapor | Synonyms: haziness, mistiness, steaminess, vapourousness |
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| vapors | (noun) a state of depression | Synonyms: blue devils, blues, megrims, vapours |
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| vapour | (noun) the process of becoming a vapor | Synonyms: evaporation, vapor, vaporisation, vaporization |
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| (noun) a visible suspension in the air of particles of some substance | Synonyms: vapor |
| vapourousness | (noun) cloudiness resulting from haze or mist or vapor | Synonyms: haziness, mistiness, steaminess, vaporousness |
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| vapours | (noun) a state of depression | Synonyms: blue devils, blues, megrims, vapors |
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| vaquero | (noun) local names for a cowboy (`vaquero' is used especially in southwestern and central Texas and `buckaroo' is used especially in California) | Synonyms: buckaroo, buckeroo |
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| vaquita | (noun) a short porpoise that lives in the Gulf of California; an endangered species | Synonyms: Phocoena sinus |
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| var | (noun) a unit of electrical power in an AC circuit equal to the power dissipated when 1 volt produces a current of 1 ampere | Synonyms: volt-ampere |
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| vara | (noun) a Spanish unit of length (about a yard) having different values in different localities | - |
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| varan | (noun) any of various large tropical carnivorous lizards of Africa and Asia and Australia; fabled to warn of crocodiles | Synonyms: monitor, monitor lizard |
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| vardenafil | (noun) virility drug (trade name Levitra) used to treat erectile dysfunction in men | Synonyms: Levitra |
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| variability | (noun) the quality of being subject to variation | Synonyms: variableness, variance |
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| (noun) the quality of being uneven and lacking uniformity | Synonyms: unevenness |
| variable | (noun) a quantity that can assume any of a set of values | Synonyms: variable quantity |
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| (noun) a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity | - |
| (noun) something that is likely to vary; something that is subject to variation | - |
| (noun) a star that varies noticeably in brightness | Synonyms: variable star |
| variableness | (noun) the quality of being subject to variation | Synonyms: variability, variance |
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| variance | (noun) an activity that varies from a norm or standard | Synonyms: variation |
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| (noun) an official dispensation to act contrary to a rule or regulation (typically a building regulation) | - |
| (noun) a difference between conflicting facts or claims or opinions | Synonyms: disagreement, discrepancy, divergence |
| (noun) the quality of being subject to variation | Synonyms: variability, variableness |
| (noun) the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value | - |
| (noun) discord that splits a group | Synonyms: division |
| (noun) an event that departs from expectations | Synonyms: discrepancy, variant |
| variant | (noun) a variable quantity that is random | Synonyms: chance variable, random variable, stochastic variable, variate |
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| (noun) something a little different from others of the same type | Synonyms: edition, variation, version |
| (noun) an event that departs from expectations | Synonyms: discrepancy, variance |
| (noun) (biology) a group of organisms within a species that differ in trivial ways from similar groups | Synonyms: form, strain, var. |
| variate | (noun) a variable quantity that is random | Synonyms: chance variable, random variable, stochastic variable, variant |
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| variation | (noun) an activity that varies from a norm or standard | Synonyms: variance |
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| (noun) the act of changing or altering something slightly but noticeably from the norm or standard | - |
| (noun) (ballet) a solo dance or dance figure | Synonyms: pas seul |
| (noun) an artifact that deviates from a norm or standard | - |
| (noun) something a little different from others of the same type | Synonyms: edition, variant, version |
| (noun) a repetition of a musical theme in which it is modified or embellished | - |
| (noun) an instance of change; the rate or magnitude of change | Synonyms: fluctuation |
| (noun) (biology) an organism that has characteristics resulting from chromosomal alteration | Synonyms: mutant, mutation, sport |
| (noun) (astronomy) any perturbation of the mean motion or orbit of a planet or satellite (especially a perturbation of the earth's moon) | - |
| (noun) the process of varying or being varied | - |
| (noun) the angle (at a particular location) between magnetic north and true north | Synonyms: magnetic declination, magnetic variation |
| varicella | (noun) an acute contagious disease caused by herpes varicella zoster virus; causes a rash of vesicles on the face and body | Synonyms: chickenpox |
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| varicocele | (noun) dilatation of the veins associated with the spermatic cord in the testes | - |
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| varicosis | (noun) pathological condition of being varicose or having varicose veins | - |
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| varicosity | (noun) varix or varicose condition in which a vein is swollen and tortuous | - |
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| variedness | (noun) characterized by variation | - |
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| variegation | (noun) the act of introducing variety (especially in investments or in the variety of goods and services offered) | Synonyms: diversification |
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| (noun) variability in coloration | - |
| varietal | (noun) a wine made principally from one grape and carrying the name of that grape | Synonyms: varietal wine |
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| variety | (noun) noticeable heterogeneity | Synonyms: diverseness, diversity, multifariousness |
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| (noun) a difference that is usually pleasant | Synonyms: change |
| (noun) a category of things distinguished by some common characteristic or quality | Synonyms: form, kind, sort |
| (noun) a show consisting of a series of short unrelated performances | Synonyms: variety show |
| (noun) (biology) a taxonomic category consisting of members of a species that differ from others of the same species in minor but heritable characteristics | - |
| (noun) a collection containing a variety of sorts of things | Synonyms: assortment, miscellanea, miscellany, mixed bag, mixture, motley, potpourri, salmagundi, smorgasbord |
| variola | (noun) a highly contagious viral disease characterized by fever and weakness and skin eruption with pustules that form scabs that slough off leaving scars | Synonyms: smallpox, variola major |
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| variolation | (noun) the obsolete process of inoculating a susceptible person with material taken from a vesicle of a person who has smallpox | Synonyms: variolization |
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| variolization | (noun) the obsolete process of inoculating a susceptible person with material taken from a vesicle of a person who has smallpox | Synonyms: variolation |
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| variometer | (noun) a measuring instrument for measuring variations in a magnetic field | - |
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| variorum | (noun) an edition containing various versions of a text or notes by various scholars or editors | Synonyms: variorum edition |
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| varix | (noun) abnormally enlarged or twisted blood vessel or lymphatic vessel | - |
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| varlet | (noun) in medieval times a youth acting as a knight's attendant as the first stage in training for knighthood | Synonyms: page |
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| (noun) a deceitful and unreliable scoundrel | Synonyms: knave, rapscallion, rascal, rogue, scalawag, scallywag |
| varment | (noun) any usually predatory wild animal considered undesirable; e.g., coyote | Synonyms: varmint |
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| varmint | (noun) any usually predatory wild animal considered undesirable; e.g., coyote | Synonyms: varment |
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| (noun) an irritating or obnoxious person | Synonyms: vermin |