| urochezia | (noun) passage of urine from the anus | Synonyms: urochesia |
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| utilization | (noun) the act of using | Synonyms: employment, exercise, usage, use, utilisation |
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| (noun) the state of having been made use of | - |
| utilizer | (noun) someone who puts to good use | Synonyms: utiliser |
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| vacuolization | (noun) the state of having become filled with vacuoles | Synonyms: vacuolation, vacuolisation |
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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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| 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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| vascularization | (noun) the organic process whereby body tissue becomes vascular and develops capillaries | Synonyms: vascularisation |
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| verbalization | (noun) the activity of expressing something in words | Synonyms: verbalisation |
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| (noun) the words that are spoken in the activity of verbalization | Synonyms: verbalisation |
| verbalizer | (noun) someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous) | Synonyms: speaker, talker, utterer, verbaliser |
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| victimization | (noun) an act that exploits or victimizes someone (treats them unfairly) | Synonyms: exploitation, using, victimisation |
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| (noun) adversity resulting from being made a victim | - |
| victimizer | (noun) a person who victimizes others | Synonyms: victimiser |
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| vinylbenzene | (noun) a colorless oily liquid; the monomer for polystyrene | Synonyms: cinnamene, phenylethylene, styrene |
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| virilization | (noun) the abnormal development of male sexual characteristics in a female (usually as the result of hormone therapies or adrenal malfunction) | Synonyms: masculinisation, masculinization, virilisation |
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| visualization | (noun) a mental image that is similar to a visual perception | Synonyms: visual image, visualisation |
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| visualizer | (noun) one whose prevailing mental imagery is visual | Synonyms: visualiser |
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| vitalization | (noun) the state of being vitalized and filled with life | Synonyms: vitalisation |
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| vitalizer | (noun) someone who imparts energy and vitality and spirit to other people | Synonyms: animator, energiser, energizer, vitaliser |
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| vizier | (noun) a high official in a Muslim government (especially in the Ottoman Empire) | - |
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| viziership | (noun) the position of vizier | - |
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| vizor | (noun) a brim that projects to the front to shade the eyes | Synonyms: bill, eyeshade, peak, visor |
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| (noun) a piece of armor plate (with eye slits) fixed or hinged to a medieval helmet to protect the face | Synonyms: visor |
| vizsla | (noun) Hungarian hunting dog resembling the Weimaraner but having a rich deep red coat | Synonyms: Hungarian pointer |
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| vocalization | (noun) the sound made by the vibration of vocal folds modified by the resonance of the vocal tract | Synonyms: phonation, vocalisation, vocalism, voice, vox |
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| (noun) the use of uttered sounds for auditory communication | Synonyms: utterance |
| vocalizer | (noun) a person who sings | Synonyms: singer, vocaliser, vocalist |
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| (noun) an organism that can utter vocal sounds | Synonyms: utterer, vocaliser |
| vocalizing | (noun) the act of singing vocal music | Synonyms: singing |
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| vulcanization | (noun) process of treating rubber or rubberlike materials with sulphur at great heat to improve elasticity and strength or to harden them | Synonyms: vulcanisation |
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| vulcanizer | (noun) a device used for the vulcanization of rubber. | Synonyms: vulcaniser |
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| (noun) someone who vulcanizes rubber to improve its strength and resiliency | Synonyms: vulcaniser |
| vulgarization | (noun) the act of making something attractive to the general public | Synonyms: popularisation, popularization, vulgarisation |
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| (noun) the act of rendering something coarse and unrefined | Synonyms: vulgarisation |
| vulgarizer | (noun) someone who makes something vulgar | Synonyms: vulgariser |
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| (noun) someone who makes something attractive to the general public | Synonyms: populariser, popularizer, vulgariser |
| waltz | (noun) a ballroom dance in triple time with a strong accent on the first beat | Synonyms: valse |
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| (noun) music composed in triple time for waltzing | - |
| (noun) an assured victory (especially in an election) | Synonyms: walk-in |
| waltzer | (noun) a dancer who waltzes | - |
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| wheeze | (noun) breathing with a husky or whistling sound | - |
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| (noun) (Briticism) a clever or amusing scheme or trick | - |
| wheeziness | (noun) presence of abnormal high-pitched sound heard with a stethoscope when an airway is blocked (as in asthma or chronic bronchitis) | - |
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| whiz | (noun) a buzzing or hissing sound as of something traveling rapidly through the air | - |
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| (noun) someone who is dazzlingly skilled in any field | Synonyms: ace, adept, champion, genius, hotshot, maven, mavin, sensation, star, superstar, virtuoso, whizz, wiz, wizard |
| whizbang | (noun) a firecracker that (like the whizbang shell) makes a whizzing sound followed by a loud explosion | Synonyms: whizzbang |
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| (noun) a small high-velocity shell; it makes a whizzing sound followed by a bang when it hits | Synonyms: whizbang shell, whizzbang |
| whizz | (noun) someone who is dazzlingly skilled in any field | Synonyms: ace, adept, champion, genius, hotshot, maven, mavin, sensation, star, superstar, virtuoso, whiz, wiz, wizard |
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| whizzbang | (noun) a firecracker that (like the whizbang shell) makes a whizzing sound followed by a loud explosion | Synonyms: whizbang |
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| (noun) a small high-velocity shell; it makes a whizzing sound followed by a bang when it hits | Synonyms: whizbang, whizbang shell |
| wiz | (noun) someone who is dazzlingly skilled in any field | Synonyms: ace, adept, champion, genius, hotshot, maven, mavin, sensation, star, superstar, virtuoso, whiz, whizz, wizard |
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| wizard | (noun) one who practices magic or sorcery | Synonyms: magician, necromancer, sorcerer, thaumaturge, thaumaturgist |
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| (noun) someone who is dazzlingly skilled in any field | Synonyms: ace, adept, champion, genius, hotshot, maven, mavin, sensation, star, superstar, virtuoso, whiz, whizz, wiz |
| wizardry | (noun) exceptional creative ability | Synonyms: genius |
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| womanizer | (noun) a man who likes many women and has short sexual relationships with them | Synonyms: philanderer, womaniser |
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| wurtzite | (noun) a brownish-black mineral consisting of zinc sulfide | - |
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| yakuza | (noun) organized crime in Japan; an alliance of criminal organizations and illegal enterprises | - |
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| (noun) a Japanese gangster | - |
| z | (noun) the 26th letter of the Roman alphabet | Synonyms: ezed, izzard, Z, zed, zee |
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| zaatar | (noun) a famous Middle Eastern condiment made from dried hyssop leaves, mixed with sesame seeds, dried sumac, and often salt, as well as other spices. | - |
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| zabaglione | (noun) light foamy custard-like dessert served hot or chilled | Synonyms: sabayon |
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| zag | (noun) an angular shape characterized by sharp turns in alternating directions | Synonyms: zig, zigzag |
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| zaire | (noun) the basic unit of money in Zaire | - |
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| zakat | (noun) the fourth pillar of Islam is almsgiving as an act of worship | - |
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| zalcitabine | (noun) an antiviral drug used to combat HIV infection; a nucleoside analog reverse transcriptase inhibitor (NARTI) | Synonyms: ddC, DDC, dideoxycytosine |
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| zaman | (noun) large ornamental tropical American tree with bipinnate leaves and globose clusters of flowers with crimson stamens and seed pods that are eaten by cattle | Synonyms: Albizia saman, monkey pod, monkeypod, rain tree, saman, zamang |
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| zamang | (noun) large ornamental tropical American tree with bipinnate leaves and globose clusters of flowers with crimson stamens and seed pods that are eaten by cattle | Synonyms: Albizia saman, monkey pod, monkeypod, rain tree, saman, zaman |
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| zamboorak | (noun) a camel cavalry used in the early modern era by Arab, Afghan, Persian, and Indian armies | Synonyms: camel cavalry, zamburak, zamburek, zumbooruck, zumbooruk |
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| zamburak | (noun) a camel cavalry used in the early modern era by Arab, Afghan, Persian, and Indian armies | Synonyms: camel cavalry, zamboorak, zamburek, zumbooruck, zumbooruk |
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| zamburek | (noun) a camel cavalry used in the early modern era by Arab, Afghan, Persian, and Indian armies | Synonyms: camel cavalry, zamboorak, zamburak, zumbooruck, zumbooruk |
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| zamia | (noun) any of various cycads of the genus Zamia; among the smallest and most verdant cycads | - |
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| zany | (noun) a buffoon in one of the old comedies; imitates others for ludicrous effect | - |
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| (noun) a man who is a stupid incompetent fool | Synonyms: bozo, cuckoo, fathead, goof, goofball, goose, jackass, twat |
| zap | (noun) a sudden event that imparts energy or excitement, usually with a dramatic impact | - |
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| zapper | (noun) an electrical device that can injure or kill by means of electric currents | - |
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| zarf | (noun) an ornamental metal cup-shaped holder for a hot coffee cup | - |
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| zayin | (noun) the 7th letter of the Hebrew alphabet | - |
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| zeal | (noun) prompt willingness | Synonyms: eagerness, forwardness, readiness |
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| (noun) a feeling of strong eagerness (usually in favor of a person or cause) | Synonyms: ardor, ardour, elan |
| (noun) excessive fervor to do something or accomplish some end | - |
| zealot | (noun) a fervent and even militant proponent of something | Synonyms: drumbeater, partisan |
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| zealotry | (noun) excessive intolerance of opposing views | Synonyms: fanaticism, fanatism |
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| zeaxanthin | (noun) yellow carotenoid (isomeric with lutein and occurs widely with it) that is the main pigment in yellow Indian corn | - |
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| zebibit | (noun) a unit of information equal to 1024 exbibits or 2^70 bits | Synonyms: Zibit |
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| zebibyte | (noun) a unit of information equal to 1024 exbibytes or 2^70 bytes | Synonyms: ZB, zettabyte, ZiB |
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| zebra | (noun) any of several fleet black-and-white striped African equines | - |
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| zebrawood | (noun) any of various trees or shrubs having mottled or striped wood | Synonyms: zebrawood tree |
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| (noun) handsomely striped or mottled wood of the zebrawood tree; used especially for cabinetwork | - |
| zebu | (noun) domesticated ox having a humped back and long horns and a large dewlap; used chiefly as a draft animal in India and east Asia | - |
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| zed | (noun) the 26th letter of the Roman alphabet | Synonyms: ezed, izzard, Z, z, zee |
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| zee | (noun) the 26th letter of the Roman alphabet | Synonyms: ezed, izzard, Z, z, zed |
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| zenerdiode | (noun) a semiconductor diode that exhibits a sharp increase in reverse current at a well-defined reverse voltage: used as a voltage regulator | Synonyms: stabilitron |
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| zenith | (noun) the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected | - |
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| zeolite | (noun) any of a family of glassy minerals analogous to feldspar containing hydrated aluminum silicates of calcium or sodium or potassium; formed in cavities in lava flows and in plutonic rocks | - |
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| zep | (noun) a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States | Synonyms: bomber, Cuban sandwich, grinder, hero, hero sandwich, hoagie, hoagy, Italian sandwich, poor boy, sub, submarine, submarine sandwich, torpedo, wedge |
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| zephyr | (noun) a slight wind (usually refreshing) | Synonyms: air, breeze, gentle wind |
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| zeppelin | (noun) a large rigid dirigible designed to carry passengers or bombs | Synonyms: Graf Zeppelin |
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| zero | (noun) the sight setting that will cause a projectile to hit the center of the target with no wind blowing | - |
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| (noun) the point on a scale from which positive or negative numerical quantities can be measured | Synonyms: zero point |
| (noun) a mathematical element that when added to another number yields the same number | Synonyms: 0, cipher, cypher, nought |
| (noun) a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential | Synonyms: aught, cipher, cypher, goose egg, nada, naught, nil, nix, nothing, null, zilch, zip, zippo |
| zest | (noun) a tart spicy quality | Synonyms: nip, piquance, piquancy, piquantness, tang, tanginess |
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| (noun) vigorous and enthusiastic enjoyment | Synonyms: gusto, relish, zestfulness |
| zestfulness | (noun) vigorous and enthusiastic enjoyment | Synonyms: gusto, relish, zest |
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| zeta | (noun) the 6th letter of the Greek alphabet | - |
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| zettabit | (noun) a unit of information equal to 1000 exabits or 10^21 bits | Synonyms: Zb, Zbit |
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| zettabyte | (noun) a unit of information equal to 1024 exbibytes or 2^70 bytes | Synonyms: ZB, zebibyte, ZiB |
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| (noun) a unit of information equal to 1000 exabytes or 10^21 bytes | Synonyms: ZB |
| zettaflop | (noun) (computer science) a unit for measuring the speed of a computer system, equal to one sextillion floating-point operations a second. | Synonyms: ZFLOPS |
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| zeugma | (noun) use of a verb with two or more complements, playing on the verb's polysemy, for humorous effect | - |
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| zidovudine | (noun) an antiviral drug (trade name Retrovir) used in the treatment of AIDS; adverse side effects include liver damage and suppression of the bone marrow | Synonyms: AZT, Retrovir, ZDV |
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| zig | (noun) an angular shape characterized by sharp turns in alternating directions | Synonyms: zag, zigzag |
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| zigadene | (noun) any of various plants of the genus Zigadenus having glaucous leaves and terminal racemes of mostly white flowers; all are poisonous | Synonyms: death camas |
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| ziggurat | (noun) a rectangular tiered temple or terraced mound erected by the ancient Assyrians and Babylonians | Synonyms: zikkurat, zikurat |
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| zigzag | (noun) an angular shape characterized by sharp turns in alternating directions | Synonyms: zag, zig |
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| zigzaggedness | (noun) The state or quality of being zigzagged or alternating directions sharply. | - |
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| zikkurat | (noun) a rectangular tiered temple or terraced mound erected by the ancient Assyrians and Babylonians | Synonyms: ziggurat, zikurat |
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| zikurat | (noun) a rectangular tiered temple or terraced mound erected by the ancient Assyrians and Babylonians | Synonyms: ziggurat, zikkurat |
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| zilch | (noun) a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential | Synonyms: aught, cipher, cypher, goose egg, nada, naught, nil, nix, nothing, null, zero, zip, zippo |
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| zill | (noun) one of a pair of small metallic cymbals worn on the thumb and middle finger; used in belly dancing in rhythm with the dance | - |
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| zillion | (noun) a very large indefinite number (usually hyperbole) | Synonyms: bazillion, billion, gazillion, jillion, million, trillion |
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| zinc | (noun) a bluish-white lustrous metallic element; brittle at ordinary temperatures but malleable when heated; used in a wide variety of alloys and in galvanizing iron; it occurs naturally as zinc sulphide in zinc blende | Synonyms: atomic number 30, Zn |
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| zinfandel | (noun) dry fruity red wine from California | - |
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| zing | (noun) the activeness of an energetic personality | Synonyms: dynamism, oomph, pizzaz, pizzazz |
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| (noun) a brief high-pitched buzzing or humming sound | - |