| arousal | (noun) the act of arousing | Synonyms: rousing |
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| (noun) mutual sexual fondling prior to sexual intercourse | Synonyms: foreplay, stimulation |
| (noun) awakening from sleep | - |
| (noun) a state of heightened physiological activity | - |
| arouser | (noun) someone who rouses others from sleep | Synonyms: rouser, waker |
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| arpeggio | (noun) a chord whose notes are played in rapid succession rather than simultaneously | - |
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| arpent | (noun) a former French unit of area; equal approximately to an acre | - |
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| arquebus | (noun) an obsolete firearm with a long barrel | Synonyms: hackbut, hagbut, harquebus |
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| arrack | (noun) any of various strong liquors distilled from the fermented sap of toddy palms or from fermented molasses | Synonyms: arak |
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| arraignment | (noun) a legal document calling someone to court to answer an indictment | - |
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| arrangement | (noun) the act of arranging and adapting a piece of music | Synonyms: arranging, transcription |
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| (noun) the spatial property of the way in which something is placed | Synonyms: placement |
| (noun) an organized structure for arranging or classifying | Synonyms: organisation, organization, system |
| (noun) the thing arranged or agreed to | Synonyms: agreement |
| (noun) a piece of music that has been adapted for performance by a particular set of voices or instruments | Synonyms: musical arrangement |
| (noun) an orderly grouping (of things or persons) considered as a unit; the result of arranging | - |
| arranger | (noun) a person who brings order and organization to an enterprise | Synonyms: organiser, organizer |
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| (noun) a musician who adapts a composition for particular voices or instruments or for another style of performance | Synonyms: adapter, transcriber |
| arranging | (noun) the act of arranging and adapting a piece of music | Synonyms: arrangement, transcription |
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| arras | (noun) a wall hanging of heavy handwoven fabric often with pictorial designs | Synonyms: tapestry |
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| array | (noun) an arrangement of aerials spaced to give desired directional characteristics | - |
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| (noun) especially fine or decorative clothing | Synonyms: raiment, regalia |
| (noun) an impressive display | - |
| (noun) an orderly arrangement | - |
| arrears | (noun) an unpaid overdue debt | - |
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| (noun) the state of being behind in payments | - |
| arrest | (noun) the act of apprehending (especially apprehending a criminal) | Synonyms: apprehension, catch, collar, pinch, taking into custody |
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| (noun) the state of inactivity following an interruption | Synonyms: check, halt, hitch, stay, stop, stoppage |
| arrester | (noun) a restraint that slows airplanes as they land on the flight deck of an aircraft carrier | Synonyms: arrester hook |
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| arrhythmia | (noun) an abnormal rate of muscle contractions in the heart | Synonyms: cardiac arrhythmia |
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| arrival | (noun) accomplishment of an objective | Synonyms: reaching |
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| (noun) the act of arriving at a certain place | - |
| (noun) someone who arrives (or has arrived) | Synonyms: arriver, comer |
| arrivederci | (noun) a farewell remark | Synonyms: adieu, adios, au revoir, auf wiedersehen, bye-bye, bye, cheerio, good-by, good-bye, good day, goodby, goodbye, sayonara, so long |
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| arriver | (noun) someone who arrives (or has arrived) | Synonyms: arrival, comer |
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| arriviste | (noun) a person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class | Synonyms: nouveau-riche, parvenu, upstart |
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| arroba | (noun) a unit of weight used in some Spanish speaking countries | - |
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| (noun) a liquid measure (with different values) used in some Spanish speaking countries | - |
| arrogance | (noun) overbearing pride evidenced by a superior manner toward inferiors | Synonyms: haughtiness, hauteur, high-handedness, lordliness |
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| arrogation | (noun) seizure by the government | Synonyms: confiscation |
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| arrogator | (noun) a person who through conceit makes pretentious claims to rights or advantages that he or she is not entitled to or to qualities that he or she does not possess | - |
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| arrow | (noun) a projectile with a straight thin shaft and an arrowhead on one end and stabilizing vanes on the other; intended to be shot from a bow | - |
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| (noun) a mark to indicate a direction or relation | Synonyms: pointer |
| arrowhead | (noun) the pointed head or striking tip of an arrow | - |
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| arrowroot | (noun) white-flowered West Indian plant whose root yields arrowroot starch | Synonyms: American arrowroot, Maranta arundinaceae, obedience plant |
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| (noun) canna grown especially for its edible rootstock from which arrowroot starch is obtained | Synonyms: achira, Canna edulis, Canna indica, indian shot |
| (noun) a nutritive starch obtained from the root of the arrowroot plant | - |
| arrowsmith | (noun) a maker of arrows | - |
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| arrowworm | (noun) any worm of the Chaetognatha; transparent marine worm with horizontal lateral and caudal fins and a row of movable curved spines at each side of the mouth | Synonyms: chaetognath |
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| arroyo | (noun) a stream or brook | - |
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| arse | (noun) vulgar slang for anus | Synonyms: arsehole, asshole, bunghole |
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| (noun) the fleshy part of the human body that you sit on | Synonyms: ass, backside, behind, bottom, bum, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail, tail end, tooshie, tush |
| arsehole | (noun) vulgar slang for anus | Synonyms: arse, asshole, bunghole |
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| arsenal | (noun) a military structure where arms and ammunition and other military equipment are stored and training is given in the use of arms | Synonyms: armory, armoury |
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| (noun) a place where arms are manufactured | Synonyms: armory, armoury |
| (noun) all the weapons and equipment that a country has | Synonyms: armory, armoury |
| arsenate | (noun) a salt or ester of arsenic acid | - |
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| arsenic | (noun) a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and in various alloys; found in arsenopyrite and orpiment and realgar | Synonyms: As, atomic number 33 |
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| (noun) a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer | Synonyms: arsenic trioxide, arsenous anhydride, arsenous oxide, ratsbane, white arsenic |
| arsenical | (noun) a pesticide or drug containing arsenic | - |
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| arsenide | (noun) a compound of arsenic with a more positive element | - |
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| arsenopyrite | (noun) a silver-white or grey ore of arsenic | Synonyms: mispickel |
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| arsine | (noun) a poisonous colorless flammable gas used in organic synthesis and to dope transistors and as a poison gas in warfare | - |
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| arson | (noun) malicious burning to destroy property | Synonyms: fire-raising, incendiarism |
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| arsonist | (noun) a criminal who illegally sets fire to property | Synonyms: firebug, incendiary |
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| art | (noun) the creation of beautiful or significant things | Synonyms: artistic creation, artistic production |
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| (noun) the products of human creativity; works of art collectively | Synonyms: fine art |
| (noun) a superior skill that you can learn by study and practice and observation | Synonyms: artistry, prowess |
| (noun) photographs or other visual representations in a printed publication | Synonyms: artwork, graphics, nontextual matter |
| artefact | (noun) a man-made object taken as a whole | Synonyms: artifact |
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| artemisia | (noun) any of various composite shrubs or herbs of the genus Artemisia having aromatic green or greyish foliage | - |
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| arteria | (noun) a blood vessel that carries blood from the heart to the body | Synonyms: arterial blood vessel, artery |
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| arteriectasia | (noun) an abnormal distension of an artery | Synonyms: arteriectasis |
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| arteriectasis | (noun) an abnormal distension of an artery | Synonyms: arteriectasia |
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| arteriogram | (noun) an X ray of an artery filled with a contrast medium | - |
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| arteriography | (noun) roentgenographic examination of arteries | - |
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| arteriola | (noun) one of the small thin-walled arteries that end in capillaries | Synonyms: arteriole, capillary artery |
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| arteriole | (noun) one of the small thin-walled arteries that end in capillaries | Synonyms: arteriola, capillary artery |
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| arteriolosclerosis | (noun) sclerosis of the arterioles | - |
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| arteriosclerosis | (noun) sclerosis of the arterial walls | Synonyms: arterial sclerosis, coronary-artery disease, hardening of the arteries, induration of the arteries |
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| arteritis | (noun) inflammation of an artery | - |
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| artery | (noun) a major thoroughfare that bears important traffic | - |
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| (noun) a blood vessel that carries blood from the heart to the body | Synonyms: arteria, arterial blood vessel |
| artfulness | (noun) the quality of being adroit in taking unfair advantage | - |
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| arthralgia | (noun) pain in a joint or joints | - |
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| arthritic | (noun) a person afflicted with arthritis | - |
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| arthritis | (noun) inflammation of a joint or joints | - |
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| arthrocentesis | (noun) removal of fluid from a joint by centesis | - |
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| arthrodesis | (noun) the surgical fixation of a joint which is intended to result in bone fusion | - |
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| arthrogram | (noun) an X ray of a joint after the injection of a contrast medium | - |
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| arthrography | (noun) roentgenographic examination of a joint after injection of radiopaque contrast medium; produces an arthrogram | - |
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| arthromere | (noun) any of the segments in the body of a jointed animal like an arthropod | - |
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| arthropathy | (noun) a pathology or abnormality of a joint | - |
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| arthroplasty | (noun) surgical reconstruction or replacement of a malformed or degenerated joint | - |
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| arthropod | (noun) invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin | - |
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| arthroscope | (noun) a type of endoscope that is inserted into a joint for visual examination | - |
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| arthroscopy | (noun) a minimally invasive operation to repair a damaged joint; the surgeon examines the joint with an arthroscope while making repairs through a small incision | - |
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| arthrospore | (noun) one of a string of thick walled vegetative resting cells formed by some algae and fungi | - |
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| (noun) a body that resembles a spore but is not an endospore; produced by some bacteria | - |
| artichoke | (noun) a thistlelike flower head with edible fleshy leaves and heart | Synonyms: globe artichoke |
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| (noun) Mediterranean thistlelike plant widely cultivated for its large edible flower head | Synonyms: artichoke plant, Cynara scolymus, globe artichoke |
| article | (noun) one of a class of artifacts | - |
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| (noun) nonfictional prose forming an independent part of a publication | - |
| (noun) (grammar) a determiner that may indicate the specificity of reference of a noun phrase | - |
| (noun) a separate section of a legal document (as a statute or contract or will) | Synonyms: clause |
| articulateness | (noun) the quality of being facile in speech and writing | Synonyms: fluency, volubility |
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| articulatio | (noun) (anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion) | Synonyms: articulation, joint |
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| articulation | (noun) the act of joining things in such a way that motion is possible | - |
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| (noun) (anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion) | Synonyms: articulatio, joint |
| (noun) the aspect of pronunciation that involves bringing articulatory organs together so as to shape the sounds of speech | - |
| (noun) expressing in coherent verbal form | Synonyms: voice |
| (noun) the shape or manner in which things come together and a connection is made | Synonyms: join, joint, junction, juncture |
| articulator | (noun) a movable speech organ | - |
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| (noun) someone who pronounces words | - |
| artifact | (noun) a man-made object taken as a whole | Synonyms: artefact |
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| artifice | (noun) a deceptive maneuver (especially to avoid capture) | Synonyms: ruse |
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| artificer | (noun) a skilled worker who practices some trade or handicraft | Synonyms: artisan, craftsman, journeyman |
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| (noun) someone who is the first to think of or make something | Synonyms: discoverer, inventor |
| (noun) an enlisted man responsible for the upkeep of small arms and machine guns etc. | Synonyms: armorer, armourer |
| artificialism | (noun) Czech surrealism founded in 1928 by Jindrich Styrsky and Toyen (Marie Cerminova). | - |
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| artificiality | (noun) the quality of being produced by people and not occurring naturally | - |
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| artillery | (noun) large but transportable armament | Synonyms: gun, heavy weapon, ordnance |
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| (noun) a means of persuading or arguing | Synonyms: weapon |
| (noun) an army unit that uses big guns | Synonyms: artillery unit |
| artilleryman | (noun) a serviceman in the artillery | Synonyms: cannoneer, gunner, machine gunner |
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| artiodactyl | (noun) placental mammal having hooves with an even number of functional toes on each foot | Synonyms: artiodactyl mammal, even-toed ungulate |
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| artisan | (noun) a skilled worker who practices some trade or handicraft | Synonyms: artificer, craftsman, journeyman |
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| artist | (noun) a person whose creative work shows sensitivity and imagination | Synonyms: creative person |
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| artiste | (noun) a public performer (a dancer or singer) | - |
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| artistry | (noun) a superior skill that you can learn by study and practice and observation | Synonyms: art, prowess |
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| artlang | (noun) a constructed language designed for aesthetic pleasure. | Synonyms: artistic language |
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| artlessness | (noun) ingenuousness by virtue of being free from artful deceit | - |
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| (noun) the quality of innocent naivete | Synonyms: ingenuousness, innocence, naturalness |
| arts | (noun) studies intended to provide general knowledge and intellectual skills (rather than occupational or professional skills) | Synonyms: humanistic discipline, humanities, liberal arts |
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| artwork | (noun) photographs or other visual representations in a printed publication | Synonyms: art, graphics, nontextual matter |
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| arugula | (noun) erect European annual often grown as a salad crop to be harvested when young and tender | Synonyms: Eruca sativa, Eruca vesicaria sativa, garden rocket, rocket, rocket salad, roquette |
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| arui | (noun) wild sheep of northern Africa | Synonyms: Ammotragus lervia, aoudad, audad, Barbary sheep, maned sheep |
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| arum | (noun) any plant of the family Araceae; have small flowers massed on a spadix surrounded by a large spathe | Synonyms: aroid |
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| (noun) starch resembling sago that is obtained from cuckoopint root | - |
| arytaenoid | (noun) either of two small cartilages at the back of the larynx to which the vocal folds are attached | Synonyms: arytenoid, arytenoid cartilage |
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| arytenoid | (noun) either of two small cartilages at the back of the larynx to which the vocal folds are attached | Synonyms: arytaenoid, arytenoid cartilage |
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