| abruption | (noun) an instance of sudden interruption | Synonyms: breaking off |
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| abruptness | (noun) the quality of happening with headlong haste or without warning | Synonyms: precipitance, precipitancy, precipitateness, precipitousness, suddenness |
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| (noun) the property possessed by a slope that is very steep | Synonyms: precipitousness, steepness |
| (noun) an abrupt discourteous manner | Synonyms: brusqueness, curtness, gruffness, shortness |
| absorptance | (noun) a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber | Synonyms: absorption coefficient, coefficient of absorption |
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| absorption | (noun) the mental state of being preoccupied by something | Synonyms: engrossment, preoccupancy, preoccupation |
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| (noun) complete attention; intense mental effort | Synonyms: concentration, engrossment, immersion |
| (noun) (chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid | Synonyms: soaking up |
| (noun) the process of absorbing nutrients into the body after digestion | Synonyms: assimilation |
| (noun) (physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium | - |
| (noun) the social process of absorbing one cultural group into harmony with another | Synonyms: assimilation |
| absorptivity | (noun) (physics) the property of a body that determines the fraction of the incident radiation or sound flux absorbed or absorbable by the body | Synonyms: absorption factor |
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| acanthopterygian | (noun) a teleost fish with fins that are supported by sharp inflexible rays | Synonyms: spiny-finned fish |
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| acceptability | (noun) satisfactoriness by virtue of conforming to approved standards | Synonyms: acceptableness |
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| acceptableness | (noun) satisfactoriness by virtue of conforming to approved standards | Synonyms: acceptability |
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| acceptance | (noun) the act of accepting with approval; favorable reception | Synonyms: acceptation, adoption, espousal |
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| (noun) the act of taking something that is offered | - |
| (noun) a disposition to tolerate or accept people or situations | Synonyms: sufferance, toleration |
| (noun) the mental attitude that something is believable and should be accepted as true | Synonyms: credence |
| (noun) (contract law) words signifying consent to the terms of an offer (thereby creating a contract) | - |
| (noun) a time draft drawn on and accepted by a bank | Synonyms: banker's acceptance |
| (noun) the state of being acceptable and accepted | - |
| acceptation | (noun) the act of accepting with approval; favorable reception | Synonyms: acceptance, adoption, espousal |
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| (noun) the accepted meaning of a word | Synonyms: word meaning, word sense |
| (noun) acceptance as true or valid | - |
| acceptor | (noun) the person (or institution) who accepts a check or draft and becomes responsible for paying the party named in the draft when it matures | - |
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| (noun) (chemistry) in the formation of a coordinate bond it is the compound to which electrons are donated | - |
| adaptability | (noun) the ability to change (or be changed) to fit changed circumstances | - |
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| adaptation | (noun) (physiology) the responsive adjustment of a sense organ (as the eye) to varying conditions (as of light) | - |
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| (noun) a written work (as a novel) that has been recast in a new form | Synonyms: version |
| (noun) the process of adapting to something (such as environmental conditions) | Synonyms: adaption, adjustment |
| adapter | (noun) device that enables something to be used in a way different from that for which it was intended or makes different pieces of apparatus compatible | Synonyms: adaptor |
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| (noun) a musician who adapts a composition for particular voices or instruments or for another style of performance | Synonyms: arranger, transcriber |
| adaption | (noun) the process of adapting to something (such as environmental conditions) | Synonyms: adaptation, adjustment |
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| adaptor | (noun) device that enables something to be used in a way different from that for which it was intended or makes different pieces of apparatus compatible | Synonyms: adapter |
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| adept | (noun) someone who is dazzlingly skilled in any field | Synonyms: ace, champion, genius, hotshot, maven, mavin, sensation, star, superstar, virtuoso, whiz, whizz, wiz, wizard |
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| adeptness | (noun) skillful performance or ability without difficulty | Synonyms: adroitness, deftness, facility, quickness |
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| adoptee | (noun) someone (such as a child) who has been adopted | - |
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| adopter | (noun) a person who adopts a child of other parents as his or her own child | Synonyms: adoptive parent |
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| adoption | (noun) the act of accepting with approval; favorable reception | Synonyms: acceptance, acceptation, espousal |
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| (noun) the appropriation (of ideas or words etc) from another source | Synonyms: borrowing |
| (noun) a legal proceeding that creates a parent-child relation between persons not related by blood; the adopted child is entitled to all privileges belonging to a natural child of the adoptive parents (including the right to inherit) | - |
| adsorption | (noun) the accumulation of molecules of a gas to form a thin film on the surface of a solid | Synonyms: surface assimilation |
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| alcapton | (noun) an acid formed as an intermediate product of the metabolism of tyrosine and phenylalanine | Synonyms: alkapton, homogentisic acid |
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| alcaptonuria | (noun) a rare recessive metabolic anomaly marked by ochronosis and the presence of alkapton in the urine | Synonyms: alkaptonuria |
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| alkapton | (noun) an acid formed as an intermediate product of the metabolism of tyrosine and phenylalanine | Synonyms: alcapton, homogentisic acid |
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| alkaptonuria | (noun) a rare recessive metabolic anomaly marked by ochronosis and the presence of alkapton in the urine | Synonyms: alcaptonuria |
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| amboceptor | (noun) an immune body formed in the blood during infection or immunization that serves to link the complement to the antigen. | - |
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| amethopterin | (noun) toxic antimetabolite that limits cellular reproduction by acting as an antagonist to folic acid; used to treat certain cancers and psoriasis and rheumatoid arthritis | Synonyms: methotrexate, methotrexate sodium |
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| amitriptyline | (noun) a tricyclic antidepressant drug (trade name Elavil) with serious side effects; interacts with many other medications | Synonyms: amitriptyline hydrochloride, Elavil |
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| analeptic | (noun) a medication used as a stimulant to the central nervous system | - |
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| angiopteris | (noun) highly variable species of very large primitive ferns of the Pacific tropical areas with high rainfall | Synonyms: Angiopteris evecta, giant fern |
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| anomalopteryx | (noun) the smallest moa; slender moa about the size of a large turkey | Synonyms: Anomalopteryx oweni |
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| antiepileptic | (noun) a drug used to treat or prevent convulsions (as in epilepsy) | Synonyms: anticonvulsant, anticonvulsant drug, antiepileptic drug |
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| antilepton | (noun) the antiparticle of a lepton | - |
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| antiseptic | (noun) a substance that destroys micro-organisms that carry disease without harming body tissues | - |
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| apoptosis | (noun) a type of cell death in which the cell uses specialized cellular machinery to kill itself; a cell suicide mechanism that enables metazoans to control cell number and eliminate cells that threaten the animal's survival | Synonyms: caspase-mediated cell death, programmed cell death |
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| apperception | (noun) the process whereby perceived qualities of an object are related to past experience | - |
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| apteryx | (noun) nocturnal flightless bird of New Zealand having a long neck and stout legs; only surviving representative of the order Apterygiformes | Synonyms: kiwi |
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| aptitude | (noun) inherent ability | - |
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| aptness | (noun) appropriateness for the occasion | Synonyms: appositeness |
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| (noun) a disposition to behave in a certain way | Synonyms: propensity |
| archaeopteryx | (noun) extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds | Synonyms: Archaeopteryx lithographica, archeopteryx |
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| archeopteryx | (noun) extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds | Synonyms: archaeopteryx, Archaeopteryx lithographica |
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| ascription | (noun) assigning to a cause or source | Synonyms: attribution |
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| (noun) assigning some quality or character to a person or thing | Synonyms: attribution |
| assumption | (noun) the act of taking possession of or power over something | Synonyms: laying claim |
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| (noun) the act of assuming or taking for granted | - |
| (noun) audacious (even arrogant) behavior that you have no right to | Synonyms: effrontery, presumption, presumptuousness |
| (noun) a hypothesis that is taken for granted | Synonyms: supposal, supposition |
| (noun) a statement that is assumed to be true and from which a conclusion can be drawn | Synonyms: premise, premiss |
| asymptote | (noun) a straight line that is the limiting value of a curve; can be considered as tangent at infinity | - |
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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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| bankrupt | (noun) someone who has insufficient assets to cover their debts | Synonyms: insolvent |
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| bankruptcy | (noun) a legal process intended to insure equality among the creditors of a corporation declared to be insolvent | - |
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| (noun) inability to discharge all your debts as they come due | Synonyms: failure |
| (noun) a state of complete lack of some abstract property | - |
| baptism | (noun) a Christian sacrament signifying spiritual cleansing and rebirth | - |
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| baptistery | (noun) bowl for baptismal water | Synonyms: baptismal font, baptistry, font |
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| baptistry | (noun) bowl for baptismal water | Synonyms: baptismal font, baptistery, font |
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| baroreceptor | (noun) a sensory receptor that responds to pressure | - |
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| bumptiousness | (noun) offensive boldness and assertiveness | Synonyms: cockiness, forwardness, pushiness |
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| calypter | (noun) scalelike structure between the base of the wing and the halter of a two-winged fly | Synonyms: alula |
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| calyptra | (noun) the hood or cap covering the calyx of certain plants: e.g., the California poppy | - |
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| captain | (noun) a dining-room attendant who is in charge of the waiters and the seating of customers | Synonyms: headwaiter, maitre d', maitre d'hotel |
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| (noun) the pilot in charge of an airship | Synonyms: senior pilot |
| (noun) the naval officer in command of a military ship | Synonyms: skipper |
| (noun) an officer who is licensed to command a merchant ship | Synonyms: master, sea captain, skipper |
| (noun) a policeman in charge of a precinct | Synonyms: police captain, police chief |
| (noun) an officer holding a rank below a major but above a lieutenant | - |
| (noun) the leader of a group of people | Synonyms: chieftain |
| captaincy | (noun) the post of captain | Synonyms: captainship |
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| captainship | (noun) the post of captain | Synonyms: captaincy |
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| caption | (noun) brief description accompanying an illustration | Synonyms: legend |
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| (noun) translation of foreign dialogue of a movie or TV program; usually displayed at the bottom of the screen | Synonyms: subtitle |
| (noun) taking exception; especially a quibble based on a captious argument | - |
| 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 |
| captive | (noun) an animal that is confined | - |
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| (noun) a person who is confined; especially a prisoner of war | Synonyms: prisoner |
| (noun) a person held in the grip of a strong emotion or passion | - |
| captivity | (noun) the state of being a slave | Synonyms: enslavement |
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| (noun) the state of being imprisoned | Synonyms: immurement, imprisonment, incarceration |
| captopril | (noun) a drug (trade name Capoten) that blocks the formation of angiotensin in the kidneys resulting in vasodilation; used in the treatment of hypertension and congestive heart failure | Synonyms: Capoten |
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| captor | (noun) a person who captures and holds people or animals | Synonyms: capturer |
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| capture | (noun) the act of forcibly dispossessing an owner of property | Synonyms: gaining control, seizure |
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| (noun) the act of taking of a person by force | Synonyms: seizure |
| (noun) the removal of an opponent's piece from the chess board | - |
| (noun) any process in which an atomic or nuclear system acquires an additional particle | - |
| (noun) a process whereby a star or planet holds an object in its gravitational field | - |
| capturer | (noun) a person who captures and holds people or animals | Synonyms: captor |
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| cataleptic | (noun) a person suffering from catalepsy | - |
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| catoptrics | (noun) branch of optics dealing with formation of images by mirrors | - |
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| chapter | (noun) a subdivision of a written work; usually numbered and titled | - |
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| (noun) a series of related events forming an episode | - |
| (noun) a local branch of some fraternity or association | - |
| (noun) an ecclesiastical assembly of the monks in a monastery or even of the canons of a church | - |
| (noun) any distinct period in history or in a person's life | - |
| chapterhouse | (noun) a house used as a residence by a chapter of a fraternity | Synonyms: frat house, fraternity house |
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| (noun) a building attached to a monastery or cathedral; used as a meeting place for the chapter | - |
| chemisorption | (noun) adsorption (especially when irreversible) by means of chemical instead of physical forces | Synonyms: chemosorption |
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| chemoreceptor | (noun) a sensory receptor that responds to chemical stimuli | - |
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| chemosorption | (noun) adsorption (especially when irreversible) by means of chemical instead of physical forces | Synonyms: chemisorption |
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| chiropteran | (noun) nocturnal mouselike mammal with forelimbs modified to form membranous wings and anatomical adaptations for echolocation by which they navigate | Synonyms: bat |
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| circumscription | (noun) the act of circumscribing | - |
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| claptrap | (noun) pompous or pretentious talk or writing | Synonyms: blah, bombast, fustian, rant |
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| comptroller | (noun) someone who maintains and audits business accounts | Synonyms: accountant, controller |
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| comptrollership | (noun) the position of comptroller | - |
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| concept | (noun) an abstract or general idea inferred or derived from specific instances | Synonyms: conception, construct |
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| conception | (noun) the act of becoming pregnant; fertilization of an ovum by a spermatozoon | - |
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| (noun) an abstract or general idea inferred or derived from specific instances | Synonyms: concept, construct |
| (noun) the creation of something in the mind | Synonyms: design, excogitation, innovation, invention |
| (noun) the event that occurred at the beginning of something | Synonyms: creation |
| conceptualisation | (noun) inventing or contriving an idea or explanation and formulating it mentally | Synonyms: conceptualization, formulation |
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| (noun) an elaborated concept | Synonyms: conceptuality, conceptualization |
| conceptualism | (noun) the doctrine that the application of a general term to various objects indicates the existence of a mental entity that mediates the application | - |
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| conceptuality | (noun) an elaborated concept | Synonyms: conceptualisation, conceptualization |
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| conceptualization | (noun) inventing or contriving an idea or explanation and formulating it mentally | Synonyms: conceptualisation, formulation |
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| (noun) an elaborated concept | Synonyms: conceptualisation, conceptuality |
| conceptus | (noun) an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life | Synonyms: embryo, fertilized egg |
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| conniption | (noun) a display of bad temper | Synonyms: fit, scene, tantrum |
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| conscript | (noun) someone who is drafted into military service | Synonyms: draftee, inductee |
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| conscription | (noun) compulsory military service | Synonyms: draft, muster, selective service |
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| consumption | (noun) the act of consuming something | Synonyms: expenditure, using up |
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| (noun) the process of taking food into the body through the mouth (as by eating) | Synonyms: ingestion, intake, uptake |
| (noun) (economics) the utilization of economic goods to satisfy needs or in manufacturing | Synonyms: economic consumption, usance, use, use of goods and services |
| (noun) involving the lungs with progressive wasting of the body | Synonyms: phthisis, pulmonary tuberculosis, wasting disease, white plague |
| consumptive | (noun) a person with pulmonary tuberculosis | Synonyms: lunger, tubercular |
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| contempt | (noun) a willful disobedience to or disrespect for the authority of a court or legislative body | - |
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| (noun) a manner that is generally disrespectful and contemptuous | Synonyms: disrespect |
| (noun) open disrespect for a person or thing | Synonyms: scorn |
| (noun) lack of respect accompanied by a feeling of intense dislike | Synonyms: despite, disdain, scorn |
| contemptibility | (noun) unworthiness by virtue of lacking higher values | Synonyms: baseness, despicability, despicableness, sordidness |
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| contemptuousness | (noun) the manifestation of scorn and contempt | - |
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| contraception | (noun) birth control by the use of devices (diaphragm or intrauterine device or condom) or drugs or surgery | Synonyms: contraceptive method |
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| contraceptive | (noun) an agent or device intended to prevent conception | Synonyms: birth control device, contraceptive device, preventative, preventive, prophylactic device |
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| contraption | (noun) a device or control that is very useful for a particular job | Synonyms: appliance, contrivance, convenience, gadget, gismo, gizmo, widget |
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| corruptibility | (noun) the capability of being corrupted | - |
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| corruption | (noun) destroying someone's (or some group's) honesty or loyalty; undermining moral integrity | Synonyms: subversion |
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| (noun) inducement (as of a public official) by improper means (as bribery) to violate duty (as by committing a felony) | - |
| (noun) lack of integrity or honesty (especially susceptibility to bribery); use of a position of trust for dishonest gain | Synonyms: corruptness |
| (noun) moral perversion; impairment of virtue and moral principles | Synonyms: degeneracy, depravation, depravity, putrefaction |
| (noun) decay of matter (as by rot or oxidation) | - |
| (noun) in a state of progressive putrefaction | Synonyms: putrescence, putridness, rottenness |
| corruptness | (noun) lack of integrity or honesty (especially susceptibility to bribery); use of a position of trust for dishonest gain | Synonyms: corruption |
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| (noun) the state of being corrupt | - |