| aardvark | (noun) nocturnal burrowing mammal of the grasslands of Africa that feeds on termites; sole extant representative of the order Tubulidentata | Synonyms: ant bear, anteater, Orycteropus afer |
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| achievability | (noun) the state of being achievable | Synonyms: attainability, attainableness |
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| activating | (noun) the activity of causing to have energy and be active | Synonyms: activation, energizing |
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| activation | (noun) the activity of causing to have energy and be active | Synonyms: activating, energizing |
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| (noun) making active and effective (as a bomb) | - |
| (noun) stimulation of activity in an organism or chemical | - |
| activator | (noun) (biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription | - |
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| adjuvant | (noun) an additive that enhances the effectiveness of medical treatment | - |
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| advance | (noun) the act of moving forward (as toward a goal) | Synonyms: advancement, forward motion, onward motion, procession, progress, progression |
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| (noun) increase in price or value | Synonyms: rise |
| (noun) a tentative suggestion designed to elicit the reactions of others | Synonyms: approach, feeler, overture |
| (noun) a movement forward | Synonyms: progress, progression |
| (noun) a change for the better; progress in development | Synonyms: betterment, improvement |
| (noun) an amount paid before it is earned | Synonyms: cash advance |
| advancement | (noun) the act of moving forward (as toward a goal) | Synonyms: advance, forward motion, onward motion, procession, progress, progression |
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| (noun) gradual improvement or growth or development | Synonyms: progress |
| (noun) encouragement of the progress or growth or acceptance of something | Synonyms: furtherance, promotion |
| advancer | (noun) someone who advances | - |
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| advantage | (noun) the quality of having a superior or more favorable position | Synonyms: vantage |
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| (noun) benefit resulting from some event or action | Synonyms: reward |
| (noun) (tennis) first point scored after deuce | - |
| advantageousness | (noun) the quality of being encouraging or promising of a successful outcome | Synonyms: favorableness, favourableness, positiveness, positivity, profitableness |
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| aestivation | (noun) (botany) the arrangement of sepals and petals in a flower bud before it opens | Synonyms: estivation |
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| (noun) (zoology) cessation or slowing of activity during the summer; especially slowing of metabolism in some animals during a hot or dry period | Synonyms: estivation |
| aggravation | (noun) unfriendly behavior that causes anger or resentment | Synonyms: irritation, provocation |
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| (noun) action that makes a problem or a disease (or its symptoms) worse | Synonyms: exacerbation |
| (noun) an exasperated feeling of annoyance | Synonyms: exasperation |
| aggravator | (noun) an unpleasant person who is annoying or exasperating | Synonyms: annoyance |
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| akvavit | (noun) Scandinavian liquor usually flavored with caraway seeds | Synonyms: aquavit |
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| amadavat | (noun) red Asian weaverbirds often kept as cage birds | Synonyms: avadavat |
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| ambivalence | (noun) mixed feelings or emotions | Synonyms: ambivalency |
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| ambivalency | (noun) mixed feelings or emotions | Synonyms: ambivalence |
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| approval | (noun) the formal act of approving | Synonyms: approving, blessing |
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| (noun) a message expressing a favorable opinion | Synonyms: commendation |
| (noun) a feeling of liking something or someone good | - |
| (noun) acceptance as satisfactory | Synonyms: favorable reception, favourable reception |
| 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 |
| atorvastatin | (noun) an oral drug (trade name Lipitor) that is effective in lowering triglycerides; potent in reducing LDL cholesterol because higher doses can be given | Synonyms: Lipitor |
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| avadavat | (noun) red Asian weaverbirds often kept as cage birds | Synonyms: amadavat |
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| avail | (noun) a means of serving | Synonyms: help, service |
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| availability | (noun) the quality of being at hand when needed | Synonyms: accessibility, availableness, handiness |
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| availableness | (noun) the quality of being at hand when needed | Synonyms: accessibility, availability, handiness |
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| avalanche | (noun) a slide of large masses of snow and ice and mud down a mountain | - |
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| (noun) a sudden appearance of an overwhelming number of things | - |
| avaram | (noun) evergreen Indian shrub with vivid yellow flowers whose bark is used in tanning; sometimes placed in genus Cassia | Synonyms: Cassia auriculata, Senna auriculata, tanner's cassia |
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| avarice | (noun) reprehensible acquisitiveness; insatiable desire for wealth (personified as one of the deadly sins) | Synonyms: avaritia, covetousness, greed, rapacity |
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| (noun) extreme greed for material wealth | Synonyms: avariciousness, covetousness, cupidity |
| avariciousness | (noun) extreme greed for material wealth | Synonyms: avarice, covetousness, cupidity |
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| avaritia | (noun) reprehensible acquisitiveness; insatiable desire for wealth (personified as one of the deadly sins) | Synonyms: avarice, covetousness, greed, rapacity |
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| avatar | (noun) the manifestation of a Hindu deity (especially Vishnu) in human or superhuman or animal form | - |
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| (noun) a new personification of a familiar idea | Synonyms: embodiment, incarnation |
| baklava | (noun) rich Middle Eastern cake made of thin layers of flaky pastry filled with nuts and honey | - |
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| balaclava | (noun) a cap that is close-fitting and woolen and covers all of the head but the face | Synonyms: balaclava helmet |
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| believability | (noun) the quality of being believable or trustworthy | Synonyms: credibility, credibleness |
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| bevatron | (noun) a cyclotron that accelerates protons up to several billion electron volts | - |
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| bivalve | (noun) marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together | Synonyms: lamellibranch, pelecypod |
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| bolivar | (noun) the basic unit of money in Venezuela; equal to 100 centimos | - |
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| boulevard | (noun) a wide street or thoroughfare | Synonyms: avenue |
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| boulevardier | (noun) a visitor of a city boulevard (especially in Paris) | - |
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| bravado | (noun) a swaggering show of courage | Synonyms: bluster |
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| calvaria | (noun) the dome of the skull | Synonyms: skullcap |
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| calvary | (noun) any experience that causes intense suffering | Synonyms: martyrdom |
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| canavanine | (noun) an amino acid found in the jack bean | - |
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| canvas | (noun) a heavy, closely woven fabric | Synonyms: canvass |
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| (noun) the mat that forms the floor of the ring in which boxers or professional wrestlers compete | Synonyms: canvass |
| (noun) a tent made of canvas fabric | Synonyms: canvas tent, canvass |
| (noun) a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel | Synonyms: canvass, sail, sheet |
| (noun) an oil painting on canvas fabric | Synonyms: canvass |
| (noun) the setting for a narrative or fictional or dramatic account | Synonyms: canvass |
| canvasback | (noun) North American wild duck valued for sport and food | Synonyms: Aythya valisineria, canvasback duck |
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| canvass | (noun) a heavy, closely woven fabric | Synonyms: canvas |
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| (noun) the mat that forms the floor of the ring in which boxers or professional wrestlers compete | Synonyms: canvas |
| (noun) a tent made of canvas fabric | Synonyms: canvas, canvas tent |
| (noun) a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel | Synonyms: canvas, sail, sheet |
| (noun) an oil painting on canvas fabric | Synonyms: canvas |
| (noun) an inquiry into public opinion conducted by interviewing a random sample of people | Synonyms: opinion poll, poll, public opinion poll |
| (noun) the setting for a narrative or fictional or dramatic account | Synonyms: canvas |
| canvasser | (noun) someone who conducts surveys of public opinion | Synonyms: headcounter, poll taker, pollster |
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| (noun) someone who examines votes at an election | Synonyms: scrutineer |
| (noun) a petitioner who solicits contributions or trade or votes | Synonyms: solicitor |
| (noun) a person who takes or counts votes | - |
| canvassing | (noun) persuasion of voters in a political campaign | Synonyms: bell ringing, electioneering |
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| captivation | (noun) a feeling of great liking for something wonderful and unusual | Synonyms: enchantment, enthrallment, fascination |
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| (noun) the state of being intensely interested (as by awe or terror) | Synonyms: fascination |
| caravan | (noun) a camper equipped with living quarters | Synonyms: van |
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| (noun) a procession (of wagons or mules or camels) traveling together in single file | Synonyms: train, wagon train |
| caravanning | (noun) the practice of taking holidays in a caravan | - |
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| caravansary | (noun) an inn in some eastern countries with a large courtyard that provides accommodation for caravans | Synonyms: caravan inn, caravanserai, khan |
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| caravanserai | (noun) an inn in some eastern countries with a large courtyard that provides accommodation for caravans | Synonyms: caravan inn, caravansary, khan |
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| carnival | (noun) a festival marked by merrymaking and processions | - |
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| (noun) a traveling show; having sideshows and rides and games of skill etc. | Synonyms: fair, funfair |
| (noun) a frenetic disorganized (and often comic) disturbance suggestive of a large public entertainment | Synonyms: circus |
| casava | (noun) any of several plants of the genus Manihot having fleshy roots yielding a nutritious starch | Synonyms: cassava |
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| cassava | (noun) any of several plants of the genus Manihot having fleshy roots yielding a nutritious starch | Synonyms: casava |
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| (noun) cassava root eaten as a staple food after drying and leaching; source of tapioca | Synonyms: manioc |
| (noun) a starch made by leaching and drying the root of the cassava plant; the source of tapioca; a staple food in the tropics | Synonyms: cassava starch, manioc, manioca |
| cavalcade | (noun) a procession of people traveling on horseback | - |
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| cavalier | (noun) a gallant or courtly gentleman | Synonyms: chevalier |
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| cavalla | (noun) large mackerel with long pointed snout; important food and game fish of the eastern Atlantic coast southward to Brazil | Synonyms: cero, king mackerel, Scomberomorus cavalla |
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| cavalry | (noun) a highly mobile army unit | - |
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| (noun) troops trained to fight on horseback | Synonyms: horse, horse cavalry |
| cavalryman | (noun) a soldier mounted on horseback | Synonyms: trooper |
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| (noun) a soldier in a motorized army unit | Synonyms: trooper |
| cerivastatin | (noun) an oral drug (trade name Baycol) to reduce blood cholesterol levels | Synonyms: Baycol |
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| charivari | (noun) a noisy mock serenade (made by banging pans and kettles) to a newly married couple | Synonyms: belling, callathump, callithump, chivaree, shivaree |
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| chevalier | (noun) a gallant or courtly gentleman | Synonyms: cavalier |
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| chivalry | (noun) courtesy towards women | Synonyms: gallantry, politesse |
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| (noun) the medieval principles governing knighthood and knightly conduct | Synonyms: knightliness |
| chivaree | (noun) a noisy mock serenade (made by banging pans and kettles) to a newly married couple | Synonyms: belling, callathump, callithump, charivari, shivaree |
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| cleavage | (noun) the act of cleaving or splitting | - |
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| (noun) the line formed by a groove between two parts (especially the separation between a woman's breasts) | - |
| (noun) (embryology) the repeated division of a fertilised ovum | Synonyms: segmentation |
| (noun) the breaking of a chemical bond in a molecule resulting in smaller molecules | - |
| (noun) the state of being split or cleft | - |
| coeval | (noun) a person of nearly the same age as another | Synonyms: contemporary |
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| coevals | (noun) all the people living at the same time or of approximately the same age | Synonyms: contemporaries, generation |
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| conceivability | (noun) the state of being conceivable | Synonyms: conceivableness |
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| conceivableness | (noun) the state of being conceivable | Synonyms: conceivability |
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| conferva | (noun) any of various algae of the genus Tribonema; algae with branching filaments that form scum in still or stagnant fresh water | - |
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| conjunctiva | (noun) a transparent lubricating mucous membrane that covers the eyeball and the under surface of the eyelid | - |
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| connivance | (noun) agreement on a secret plot | Synonyms: collusion |
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| (noun) (law) tacit approval of someone's wrongdoing | Synonyms: secret approval, tacit consent |
| conservancy | (noun) the official conservation of trees and soil and rivers etc. | - |
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| (noun) a commission with jurisdiction over fisheries and navigation in a port or river | - |
| conservation | (noun) the preservation and careful management of the environment and of natural resources | - |
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| (noun) (physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations | - |
| (noun) an occurrence of improvement by virtue of preventing loss or injury or other change | Synonyms: preservation |
| conservationist | (noun) someone who works to protect the environment from destruction or pollution | Synonyms: environmentalist |
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| conservatism | (noun) a political or theological orientation advocating the preservation of the best in society and opposing radical changes | Synonyms: conservativism |
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| conservative | (noun) a person who is reluctant to accept changes and new ideas | Synonyms: conservativist |
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| conservativism | (noun) a political or theological orientation advocating the preservation of the best in society and opposing radical changes | Synonyms: conservatism |
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| conservativist | (noun) a person who is reluctant to accept changes and new ideas | Synonyms: conservative |
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| conservatoire | (noun) a schoolhouse with special facilities for fine arts | Synonyms: conservatory |
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| conservator | (noun) the custodian of a collection (as a museum or library) | Synonyms: curator |
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| (noun) someone appointed by a court to assume responsibility for the interests of a minor or incompetent person | - |
| conservatory | (noun) a greenhouse in which plants are arranged in a pleasing manner | Synonyms: hothouse, indoor garden |
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| (noun) a schoolhouse with special facilities for fine arts | Synonyms: conservatoire |
| (noun) the faculty and students of a school specializing in one of the fine arts | - |
| contravallation | (noun) a fortification build around a sieged target by the besiegers to prevent attacks by the defenders. | - |
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| contrivance | (noun) the act of devising something | Synonyms: devisal |
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| (noun) a device or control that is very useful for a particular job | Synonyms: appliance, contraption, convenience, gadget, gismo, gizmo, widget |
| (noun) any improvised arrangement for temporary use | Synonyms: lash-up |
| (noun) an elaborate or deceitful scheme contrived to deceive or evade | Synonyms: dodge, stratagem |
| (noun) the faculty of contriving; inventive skill | - |
| (noun) an artificial or unnatural or obviously contrived arrangement of details or parts etc. | - |
| convalescence | (noun) gradual healing (through rest) after sickness or injury | Synonyms: recovery, recuperation |
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| convalescent | (noun) a person who is recovering from illness | - |
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| cordovan | (noun) a fine leather originally made in Cordoba, Spain | - |
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| couvade | (noun) a custom among some peoples whereby the husband of a pregnant wife is put to bed at the time of bearing the child | - |
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| covalence | (noun) valence characterized by the sharing of electrons in a chemical compound; the number of pairs of electrons an atom can share | Synonyms: covalency |
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| covalency | (noun) valence characterized by the sharing of electrons in a chemical compound; the number of pairs of electrons an atom can share | Synonyms: covalence |
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| covariance | (noun) (statistics) the mean value of the product of the deviations of two variates from their respective means | - |
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| covariation | (noun) (statistics) correlated variation | - |
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| cravat | (noun) neckwear worn in a slipknot with long ends overlapping vertically in front | - |
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| crevasse | (noun) a deep fissure | - |
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| cultivar | (noun) a variety of a plant developed from a natural species and maintained under cultivation | - |
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| cultivation | (noun) (agriculture) production of food by preparing the land to grow crops (especially on a large scale) | - |
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| (noun) socialization through training and education to develop one's mind or manners | - |
| (noun) the act of raising or growing plants (especially on a large scale) | - |
| (noun) the process of fostering the growth of something | - |
| (noun) a highly developed state of perfection; having a flawless or impeccable quality | Synonyms: culture, finish, polish, refinement |
| cultivator | (noun) a farm implement used to break up the surface of the soil (for aeration and weed control and conservation of moisture) | Synonyms: tiller |
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| (noun) someone concerned with the science or art or business of cultivating the soil | Synonyms: agriculturalist, agriculturist, grower, raiser |
| curvaceousness | (noun) the quality of having a well-rounded body | Synonyms: shapeliness, voluptuousness |
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