| abattis | (noun) a line of defense consisting of a barrier of felled or live trees with branches (sharpened or with barbed wire entwined) pointed toward the enemy | Synonyms: abatis |
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| abattoir | (noun) a building where animals are butchered | Synonyms: butchery, shambles, slaughterhouse |
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| abwatt | (noun) a power unit equal to the power dissipated when 1 abampere flows across a potential difference of 1 abvolt (one ten-thousandth of a milliwatt) | - |
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| antimatter | (noun) matter consisting of elementary particles that are the antiparticles of those making up normal substances | - |
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| attache | (noun) a shallow and rectangular briefcase | Synonyms: attache case |
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| (noun) a specialist assigned to the staff of a diplomatic mission | - |
| attachment | (noun) the act of fastening things together | Synonyms: fastening |
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| (noun) the act of attaching or affixing something | Synonyms: affixation |
| (noun) faithful support for a cause or political party or religion | Synonyms: adherence, adhesion |
| (noun) a supplementary part or accessory | - |
| (noun) a connection that fastens things together | Synonyms: bond |
| (noun) a writ authorizing the seizure of property that may be needed for the payment of a judgment in a judicial proceeding | - |
| (noun) a feeling of affection for a person or an institution | Synonyms: fond regard |
| attack | (noun) (military) an offensive against an enemy (using weapons) | Synonyms: onrush, onset, onslaught |
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| (noun) a decisive manner of beginning a musical tone or phrase | Synonyms: tone-beginning |
| (noun) the act of attacking | Synonyms: attempt |
| (noun) ideas or actions intended to deal with a problem or situation | Synonyms: approach, plan of attack |
| (noun) an offensive move in a sport or game | - |
| (noun) strong criticism | - |
| (noun) intense adverse criticism | Synonyms: blast, fire, flack, flak |
| (noun) the onset of a corrosive or destructive process (as by a chemical agent) | - |
| (noun) a sudden occurrence of an uncontrollable condition | - |
| attacker | (noun) someone who attacks | Synonyms: aggressor, assailant, assaulter |
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| attainability | (noun) the state of being achievable | Synonyms: achievability, attainableness |
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| attainableness | (noun) the state of being achievable | Synonyms: achievability, attainability |
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| attainder | (noun) cancellation of civil rights | Synonyms: civil death |
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| attainment | (noun) the act of achieving an aim | - |
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| (noun) arrival at a new stage | - |
| (noun) an ability that has been acquired by training | Synonyms: accomplishment, acquirement, acquisition, skill |
| attar | (noun) essential oil or perfume obtained from flowers | Synonyms: atar, athar, ottar |
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| attempt | (noun) earnest and conscientious activity intended to do or accomplish something | Synonyms: effort, endeavor, endeavour, try |
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| (noun) the act of attacking | Synonyms: attack |
| attempter | (noun) one who tries | Synonyms: essayer, trier |
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| attendance | (noun) the act of being present (at a meeting or event etc.) | Synonyms: attending |
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| (noun) the number of people that are present | - |
| (noun) the frequency with which a person is present | - |
| attendant | (noun) an event or situation that happens at the same time as or in connection with another | Synonyms: accompaniment, co-occurrence, concomitant |
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| (noun) someone who waits on or tends to or attends to the needs of another | Synonyms: attender, tender |
| (noun) a person who is present and participates in a meeting | Synonyms: attendee, attender, meeter |
| attendee | (noun) a person who is present and participates in a meeting | Synonyms: attendant, attender, meeter |
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| attender | (noun) someone who waits on or tends to or attends to the needs of another | Synonyms: attendant, tender |
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| (noun) a person who is present and participates in a meeting | Synonyms: attendant, attendee, meeter |
| (noun) someone who listens attentively | Synonyms: auditor, hearer, listener |
| attending | (noun) the act of being present (at a meeting or event etc.) | Synonyms: attendance |
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| (noun) the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others | Synonyms: attention |
| attention | (noun) the work of providing treatment for or attending to someone or something | Synonyms: aid, care, tending |
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| (noun) a courteous act indicating affection | - |
| (noun) a motionless erect stance with arms at the sides and feet together; assumed by military personnel during drill or review | - |
| (noun) the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others | Synonyms: attending |
| (noun) the faculty or power of mental concentration | - |
| (noun) a general interest that leads people to want to know more | - |
| attentiveness | (noun) the trait of being considerate and thoughtful of others | - |
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| (noun) the trait of being observant and paying attention | - |
| (noun) paying particular notice (as to children or helpless people) | Synonyms: heed, paying attention, regard |
| attenuation | (noun) the property of something that has been weakened or reduced in thickness or density | - |
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| (noun) weakening in force or intensity | Synonyms: fading |
| attenuator | (noun) an electrical device for attenuating the strength of an electrical signal | - |
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| attestant | (noun) (law) a person who attests to the genuineness of a document or signature by adding their own signature | Synonyms: attestator, attestor, witness |
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| (noun) someone who affirms or vouches for the correctness or truth or genuineness of something | Synonyms: attester |
| attestation | (noun) the action of bearing witness | - |
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| (noun) the evidence by which something is attested | - |
| attestator | (noun) (law) a person who attests to the genuineness of a document or signature by adding their own signature | Synonyms: attestant, attestor, witness |
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| attester | (noun) someone who affirms or vouches for the correctness or truth or genuineness of something | Synonyms: attestant |
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| attestor | (noun) (law) a person who attests to the genuineness of a document or signature by adding their own signature | Synonyms: attestant, attestator, witness |
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| attic | (noun) floor consisting of open space at the top of a house just below roof; often used for storage | Synonyms: garret, loft |
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| (noun) (architecture) a low wall at the top of the entablature; hides the roof | - |
| (noun) informal terms for a human head | Synonyms: bean, bonce, dome, noggin, noodle |
| attire | (noun) clothing of a distinctive style or for a particular occasion | Synonyms: dress, garb |
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| attitude | (noun) a theatrical pose created for effect | - |
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| (noun) the arrangement of the body and its limbs | Synonyms: position, posture |
| (noun) a complex mental state involving beliefs and feelings and values and dispositions to act in certain ways | Synonyms: mental attitude |
| (noun) position of aircraft or spacecraft relative to a frame of reference (the horizon or direction of motion) | - |
| attorney | (noun) a professional person authorized to practice law; conducts lawsuits or gives legal advice | Synonyms: lawyer |
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| attorneyship | (noun) the position of attorney | - |
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| attosecond | (noun) one quintillionth (10^-18) of a second; one thousandth of a femtosecond | - |
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| attracter | (noun) a characteristic that provides pleasure and attracts | Synonyms: attraction, attractive feature, attractor, magnet |
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| (noun) (physics) a point in the ideal multidimensional phase space that is used to describe a system toward which the system tends to evolve regardless of the starting conditions of the system | Synonyms: attractor |
| (noun) an entertainer who attracts large audiences | Synonyms: attraction, attractor, draw, drawing card |
| attraction | (noun) the quality of arousing interest; being attractive or something that attracts | Synonyms: attractiveness |
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| (noun) a characteristic that provides pleasure and attracts | Synonyms: attracter, attractive feature, attractor, magnet |
| (noun) an entertainment that is offered to the public | - |
| (noun) an entertainer who attracts large audiences | Synonyms: attracter, attractor, draw, drawing card |
| (noun) the force by which one object attracts another | Synonyms: attractive force |
| attractiveness | (noun) sexual allure | - |
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| (noun) the quality of arousing interest; being attractive or something that attracts | Synonyms: attraction |
| attractor | (noun) a characteristic that provides pleasure and attracts | Synonyms: attracter, attraction, attractive feature, magnet |
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| (noun) (physics) a point in the ideal multidimensional phase space that is used to describe a system toward which the system tends to evolve regardless of the starting conditions of the system | Synonyms: attracter |
| (noun) an entertainer who attracts large audiences | Synonyms: attracter, attraction, draw, drawing card |
| attribute | (noun) an abstraction belonging to or characteristic of an entity | - |
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| (noun) a construct whereby objects or individuals can be distinguished | Synonyms: dimension, property |
| attribution | (noun) assigning to a cause or source | Synonyms: ascription |
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| (noun) assigning some quality or character to a person or thing | Synonyms: ascription |
| attrition | (noun) the act of rubbing together; wearing something down by friction | - |
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| (noun) a wearing down to weaken or destroy | - |
| (noun) sorrow for sin arising from fear of damnation | Synonyms: contriteness, contrition |
| (noun) the wearing down of rock particles by friction due to water or wind or ice | Synonyms: abrasion, detrition, grinding |
| (noun) erosion by friction | Synonyms: abrasion, corrasion, detrition |
| battalion | (noun) an army unit usually consisting of a headquarters and three or more companies | - |
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| (noun) a large indefinite quantity | Synonyms: large number, multitude, pack, plurality |
| batten | (noun) a strip fixed to something to hold it firm | - |
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| (noun) stuffing made of rolls or sheets of cotton wool or synthetic fiber | Synonyms: batting |
| batter | (noun) a liquid or semiliquid mixture, as of flour, eggs, and milk, used in cooking | - |
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| (noun) (baseball) a ballplayer who is batting | Synonyms: batsman, hitter, slugger |
| battercake | (noun) a flat cake of thin batter fried on both sides on a griddle | Synonyms: flannel-cake, flannel cake, flapcake, flapjack, griddlecake, hot cake, hotcake, pancake |
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| battering | (noun) the act of subjecting to strong attack | Synonyms: banging |
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| battery | (noun) an assault in which the assailant makes physical contact | Synonyms: assault and battery |
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| (noun) the heavy fire of artillery to saturate an area rather than hit a specific target | Synonyms: barrage, barrage fire, bombardment, shelling |
| (noun) a device that produces electricity; may have several primary or secondary cells arranged in parallel or series | Synonyms: electric battery |
| (noun) a series of stamps operated in one mortar for crushing ores | Synonyms: stamp battery |
| (noun) a collection of related things intended for use together | - |
| (noun) group of guns or missile launchers operated together at one place | - |
| (noun) a unit composed of the pitcher and catcher | - |
| batting | (noun) (baseball) the batter's attempt to get on base | - |
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| (noun) stuffing made of rolls or sheets of cotton wool or synthetic fiber | Synonyms: batten |
| battle | (noun) a hostile meeting of opposing military forces in the course of a war | Synonyms: conflict, engagement, fight |
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| (noun) an energetic attempt to achieve something | Synonyms: struggle |
| (noun) an open clash between two opposing groups (or individuals) | Synonyms: conflict, struggle |
| battledore | (noun) an ancient racket game | Synonyms: battledore and shuttlecock |
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| (noun) a light long-handled racket used by badminton players | Synonyms: badminton racket, badminton racquet |
| battlefield | (noun) a region where a battle is being (or has been) fought | Synonyms: battleground, field, field of battle, field of honor |
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| battlefront | (noun) the line along which opposing armies face each other | Synonyms: front, front line |
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| battleground | (noun) a region where a battle is being (or has been) fought | Synonyms: battlefield, field, field of battle, field of honor |
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| battlement | (noun) a rampart built around the top of a castle with regular gaps for firing arrows or guns | Synonyms: crenelation, crenellation |
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| battler | (noun) someone who fights (or is fighting) | Synonyms: belligerent, combatant, fighter, scrapper |
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| battleship | (noun) large and heavily armoured warship | Synonyms: battlewagon |
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| battlesight | (noun) an arrangement of sights that makes possible the rapid aiming of a firearm at short ranges | Synonyms: battle sight |
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| battlewagon | (noun) large and heavily armoured warship | Synonyms: battleship |
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| battue | (noun) a hunt in which beaters force the game to flee in the direction of the hunter | - |
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| (noun) indiscriminate slaughter | Synonyms: bloodbath, bloodletting, bloodshed |
| bioattack | (noun) the use of bacteria or viruses or toxins to destroy men and animals or food | Synonyms: biologic attack, biological attack, biological warfare, BW |
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| brattice | (noun) a partition (often temporary) of planks or cloth that is used to control ventilation in a mine | - |
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| brattiness | (noun) The state or condition of acting like a brat, being unruly and impolite. | - |
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| cattail | (noun) tall erect herbs with sword-shaped leaves; cosmopolitan in fresh and salt marshes | - |
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| cattalo | (noun) hardy breed of cattle resulting from crossing domestic cattle with the American buffalo; yields leaner beef than conventional breeds | Synonyms: beefalo |
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| cattie | (noun) any of various units of weight used in southeastern Asia (especially a Chinese measure equal to 500 grams) | Synonyms: catty |
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| cattiness | (noun) malevolence by virtue of being malicious or spiteful or nasty | Synonyms: bitchiness, nastiness, spite, spitefulness |
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| cattle | (noun) domesticated bovine animals as a group regardless of sex or age | Synonyms: Bos taurus, cows, kine, oxen |
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| cattleman | (noun) a man who raises (or tends) cattle | Synonyms: beef man, cow man |
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| (noun) a male hired hand who tends cattle and performs other duties on horseback | Synonyms: cowboy, cowman |
| cattleship | (noun) a cargo ship for the transport of livestock | Synonyms: cattle boat |
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| cattleya | (noun) any orchid of the genus Cattleya characterized by a three-lobed lip enclosing the column; among the most popular and most extravagantly beautiful orchids known | - |
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| catty | (noun) any of various units of weight used in southeastern Asia (especially a Chinese measure equal to 500 grams) | Synonyms: cattie |
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| chapatti | (noun) flat pancake-like bread cooked on a griddle | Synonyms: chapati |
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| chattel | (noun) personal as opposed to real property; any tangible movable property (furniture or domestic animals or a car etc) | Synonyms: movable, personal chattel |
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| chatter | (noun) noisy talk | Synonyms: cackle, yack, yak, yakety-yak |
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| (noun) the high-pitched continuing noise made by animals (birds or monkeys) | Synonyms: chattering |
| (noun) the rapid series of noises made by the parts of a machine | Synonyms: chattering |
| chatterbox | (noun) an obnoxious and foolish and loquacious talker | Synonyms: babbler, chatterer, magpie, prater, spouter |
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| (noun) orchid growing along streams or ponds of western North America having leafy stems and 1 greenish-brown and pinkish flower in the axil of each upper leaf | Synonyms: Epipactis gigantea, giant helleborine, stream orchid |
| chatterer | (noun) passerine bird of New World tropics | Synonyms: cotinga |
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| (noun) an obnoxious and foolish and loquacious talker | Synonyms: babbler, chatterbox, magpie, prater, spouter |
| chattering | (noun) the high-pitched continuing noise made by animals (birds or monkeys) | Synonyms: chatter |
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| (noun) the rapid series of noises made by the parts of a machine | Synonyms: chatter |
| chemoattractant | (noun) a substance inducing positive chemotaxis in motile cells. | - |
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| clatter | (noun) a rattling noise (often produced by rapid movement) | - |
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| coattail | (noun) the loose back flap of a coat that hangs below the waist | - |
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| counterattack | (noun) an attack by a defending force against an attacking enemy force in order to regain lost ground or cut off enemy advance units etc. | Synonyms: countermove |
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| (noun) (chess) an attack that is intended to counter the opponent's advantage in another part of the board | Synonyms: counterplay |
| counterattraction | (noun) a rival attraction | - |
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| fattiness | (noun) having the property of containing fat | Synonyms: adiposeness, adiposity |
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| fattism | (noun) discrimination against people who are overweight | Synonyms: fatism |
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| fatty | (noun) a rotund individual | Synonyms: butterball, fat person, fatso, roly-poly |
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| flatterer | (noun) a person who uses flattery | Synonyms: adulator |
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| flattery | (noun) excessive or insincere praise | - |
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| flattop | (noun) a large warship that carries planes and has a long flat deck for takeoffs and landings | Synonyms: aircraft carrier, attack aircraft carrier, carrier |
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| (noun) a closely cropped haircut; usually for men or boys | Synonyms: butch, crew cut |
| flyswatter | (noun) an implement with a flat part (of mesh or plastic) and a long handle; used to kill insects | Synonyms: flyswat, swatter |
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| formatting | (noun) the organization of information according to preset specifications (usually for computer processing) | Synonyms: data format, data formatting, format |
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| ghatti | (noun) an Indian gum from the dhawa tree; used as a substitute for gum arabic | Synonyms: ghatti gum |
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| harmattan | (noun) a dusty wind from the Sahara that blows toward the western coast of Africa during the winter | - |
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| hatter | (noun) someone who makes and sells hats | Synonyms: hatmaker, milliner, modiste |
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| inattention | (noun) lack of attention | - |
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| inattentiveness | (noun) the trait of not being considerate and thoughtful of others | - |
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| (noun) a lack of attentiveness (as to children or helpless people) | Synonyms: heedlessness |
| kilowatt | (noun) a unit of power equal to 1000 watts | Synonyms: kW |
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| latte | (noun) strong espresso coffee with a topping of frothed steamed milk | Synonyms: caffe latte |
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| latten | (noun) brass (or a yellow alloy resembling brass) that was hammered into thin sheets; formerly used for church utensils | - |
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| latter | (noun) the second of two or the second mentioned of two | - |
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