| cupbearer | (noun) the attendant (usually an officer of a nobleman's household) whose duty is to fill and serve cups of wine | - |
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| curare | (noun) a toxic alkaloid found in certain tropical South American trees that is a powerful relaxant for striated muscles | Synonyms: tubocurarine |
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| cure | (noun) a medicine or therapy that cures disease or relieve pain | Synonyms: curative, remedy, therapeutic |
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| curet | (noun) a surgical instrument shaped like a scoop to remove tissue from a bodily cavity | Synonyms: curette |
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| curettage | (noun) surgery to remove tissue or growths from a bodily cavity (as the uterus) by scraping with a curette | Synonyms: curettement |
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| curette | (noun) a surgical instrument shaped like a scoop to remove tissue from a bodily cavity | Synonyms: curet |
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| curettement | (noun) surgery to remove tissue or growths from a bodily cavity (as the uterus) by scraping with a curette | Synonyms: curettage |
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| currency | (noun) the property of belonging to the present time | Synonyms: currentness, up-to-dateness |
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| (noun) general acceptance or use | - |
| (noun) the metal or paper medium of exchange that is presently used | - |
| current | (noun) a steady flow of a fluid (usually from natural causes) | Synonyms: stream |
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| (noun) dominant course (suggestive of running water) of successive events or ideas | Synonyms: flow, stream |
| (noun) a flow of electricity through a conductor | Synonyms: electric current |
| currentness | (noun) the property of belonging to the present time | Synonyms: currency, up-to-dateness |
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| curvature | (noun) the rate of change (at a point) of the angle between a curve and a tangent to the curve | - |
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| (noun) the property possessed by the curving of a line or surface | Synonyms: curve |
| (noun) (medicine) a curving or bending; often abnormal | - |
| cyberculture | (noun) the culture that emerges from the use of computers for communication and entertainment and business | - |
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| cynosure | (noun) something that strongly attracts attention and admiration | - |
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| (noun) something that provides guidance (as Polaris guides mariners) | - |
| cypre | (noun) large tropical American tree of the genus Cordia grown for its abundant creamy white flowers and valuable wood | Synonyms: Cordia alliodora, Equador laurel, princewood, salmwood, Spanish elm |
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| cypress | (noun) any of numerous evergreen conifers of the genus Cupressus of north temperate regions having dark scalelike leaves and rounded cones | Synonyms: cypress tree |
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| (noun) wood of any of various cypress trees especially of the genus Cupressus | - |
| cytoarchitecture | (noun) the cellular composition of a bodily structure | Synonyms: cytoarchitectonics |
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| daguerreotype | (noun) a photograph made by an early photographic process; the image was produced on a silver plate sensitized to iodine and developed in mercury vapor | - |
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| dare | (noun) a challenge to do something dangerous or foolhardy | Synonyms: daring |
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| daredevil | (noun) a reckless impetuous irresponsible person | Synonyms: harum-scarum, hothead, lunatic, madcap, swashbuckler |
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| daredevilry | (noun) boldness as manifested in rash and daredevil behavior | Synonyms: daredeviltry |
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| daredeviltry | (noun) boldness as manifested in rash and daredevil behavior | Synonyms: daredevilry |
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| dasyure | (noun) any of several more or less arboreal marsupials somewhat resembling martens | - |
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| daybreak | (noun) the first light of day | Synonyms: aurora, break of day, break of the day, cockcrow, dawn, dawning, dayspring, first light, morning, sunrise, sunup |
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| daycare | (noun) childcare during the day while parents work | Synonyms: day care |
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| daydream | (noun) absentminded dreaming while awake | Synonyms: air castle, castle in Spain, castle in the air, daydreaming, oneirism, reverie, revery |
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| daydreamer | (noun) someone who indulges in idle or absentminded daydreaming | Synonyms: woolgatherer |
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| daydreaming | (noun) absentminded dreaming while awake | Synonyms: air castle, castle in Spain, castle in the air, daydream, oneirism, reverie, revery |
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| dearest | (noun) a beloved person; used as terms of endearment | Synonyms: baby, beloved, darling, dear, dearie, deary, honey, love, sweetheart, sweetie |
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| debenture | (noun) a certificate or voucher acknowledging a debt | - |
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| (noun) the ability of a customer to obtain goods or services before payment, based on the trust that payment will be made in the future | Synonyms: debenture bond, unsecured bond |
| decalitre | (noun) a metric unit of volume or capacity equal to 10 liters | Synonyms: dal, decaliter, dekaliter, dekalitre, dkl |
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| decametre | (noun) a metric unit of length equal to ten meters | Synonyms: dam, decameter, dekameter, dekametre, dkm |
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| decilitre | (noun) a metric unit of volume equal to one tenth of a liter | Synonyms: deciliter, dl |
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| decimetre | (noun) a metric unit of length equal to one tenth of a meter | Synonyms: decimeter, dm |
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| decipherer | (noun) a reader capable of reading and interpreting illegible or obscure text | - |
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| (noun) the kind of intellectual who converts messages from a code to plain text | Synonyms: decoder |
| declarer | (noun) the bridge player in contract bridge who wins the bidding and can declare which suit is to be trumps | Synonyms: contractor |
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| (noun) someone who claims to speak the truth | Synonyms: affirmer, asserter, asseverator, avower |
| decompressing | (noun) relieving pressure (especially bringing a compressed person gradually back to atmospheric pressure) | Synonyms: decompression |
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| decompression | (noun) relieving pressure (especially bringing a compressed person gradually back to atmospheric pressure) | Synonyms: decompressing |
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| (noun) restoring compressed information to its normal form for use or display | - |
| decrease | (noun) the act of decreasing or reducing something | Synonyms: diminution, reduction, step-down |
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| (noun) the amount by which something decreases | Synonyms: decrement |
| (noun) a change downward | Synonyms: drop-off, lessening |
| (noun) a process of becoming smaller or shorter | Synonyms: decrement |
| decree | (noun) a legally binding command or decision entered on the court record (as if issued by a court or judge) | Synonyms: edict, fiat, order, rescript |
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| decrement | (noun) the amount by which something decreases | Synonyms: decrease |
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| (noun) a process of becoming smaller or shorter | Synonyms: decrease |
| decrementation | (noun) the operation of subtracting one from the operand. | - |
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| decrepitation | (noun) the crackling or breaking up of certain crystals when they are heated | - |
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| decrepitude | (noun) a state of deterioration due to old age or long use | Synonyms: dilapidation |
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| (noun) The quality or state of being wasted and weakened by or as if by the infirmities of old age. | - |
| decrescendo | (noun) (music) a gradual decrease in loudness | Synonyms: diminuendo |
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| dedifferentiation | (noun) the loss of specialization in form or function | - |
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| deference | (noun) a courteous expression (by word or deed) of esteem or regard | Synonyms: respect |
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| (noun) a disposition or tendency to yield to the will of others | Synonyms: complaisance, compliance, compliancy, obligingness |
| (noun) courteous regard for people's feelings | Synonyms: respect, respectfulness |
| deforestation | (noun) the removal of trees | Synonyms: disforestation |
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| (noun) the state of being clear of trees | - |
| degreaser | (noun) a chemical substance that dissolves water-insoluble substances, such as greases and oils. | - |
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| degree | (noun) a position on a scale of intensity or amount or quality | Synonyms: grade, level |
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| (noun) the seriousness of something (e.g., a burn or crime) | - |
| (noun) the highest power of a term or variable | - |
| (noun) an award conferred by a college or university signifying that the recipient has satisfactorily completed a course of study | Synonyms: academic degree |
| (noun) a measure for arcs and angles | Synonyms: arcdegree |
| (noun) a unit of temperature on a specified scale | - |
| (noun) a specific identifiable position in a continuum or series or especially in a process | Synonyms: level, point, stage |
| dehydroretinol | (noun) a viscous alcohol that is less active in mammals than is vitamin A1 | Synonyms: vitamin A2 |
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| dekalitre | (noun) a metric unit of volume or capacity equal to 10 liters | Synonyms: dal, decaliter, decalitre, dekaliter, dkl |
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| dekametre | (noun) a metric unit of length equal to ten meters | Synonyms: dam, decameter, decametre, dekameter, dkm |
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| deliverer | (noun) a person who rescues you from harm or danger | Synonyms: rescuer, savior, saviour |
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| (noun) a person who gives up or transfers money or goods | - |
| (noun) someone employed to make deliveries | Synonyms: delivery boy, deliveryman |
| demureness | (noun) the trait of behaving with reserve and decorum | - |
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| (noun) the affectation of being demure in a provocative way | Synonyms: coyness |
| demurrer | (noun) a defendant's answer or plea denying the truth of the charges against him | Synonyms: defence, defense, denial |
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| (noun) (law) a formal objection to an opponent's pleadings | Synonyms: demur, demurral |
| (noun) (law) any pleading that attacks the legal sufficiency of the opponent's pleadings | - |
| denture | (noun) a dental appliance that artificially replaces missing teeth | Synonyms: dental plate, plate |
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| departure | (noun) the act of departing | Synonyms: going, going away, leaving |
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| (noun) euphemistic expressions for death | Synonyms: exit, expiration, going, loss, passing, release |
| (noun) a variation that deviates from the standard or norm | Synonyms: deviation, difference, divergence |
| deprecatio | (noun) a praying against evil, against others, or oneself; a prayer for the removal of some evil. | - |
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| deprecation | (noun) the act of expressing disapproval (especially of yourself) | Synonyms: denigration |
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| (noun) a prayer to avert or remove some evil or disaster | - |
| depreciation | (noun) a decrease in price or value | - |
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| (noun) a communication that belittles somebody or something | Synonyms: derogation, disparagement |
| (noun) decrease in value of an asset due to obsolescence or use | Synonyms: wear and tear |
| depreciator | (noun) one who disparages or belittles the worth of something | Synonyms: detractor, disparager, knocker |
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| depredation | (noun) an act of plundering and pillaging and marauding | Synonyms: predation |
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| (noun) (usually plural) a destructive action | Synonyms: ravage |
| depressant | (noun) a drug that reduces excitability and calms a person | Synonyms: downer, sedative, sedative drug |
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| depression | (noun) pushing down | - |
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| (noun) sad feelings of gloom and inadequacy | - |
| (noun) a sunken or depressed geological formation | Synonyms: natural depression |
| (noun) angular distance below the horizon (especially of a celestial object) | - |
| (noun) a concavity in a surface produced by pressing | Synonyms: impression, imprint |
| (noun) a mental state characterized by a pessimistic sense of inadequacy and a despondent lack of activity | - |
| (noun) an air mass of lower pressure; often brings precipitation | Synonyms: low |
| (noun) a long-term economic state characterized by unemployment and low prices and low levels of trade and investment | Synonyms: economic crisis, slump |
| (noun) a state of depression and anhedonia so severe as to require clinical intervention | Synonyms: clinical depression, depressive disorder |
| depressive | (noun) someone suffering psychological depression | - |
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| depressor | (noun) a device used by physician to press a part down or aside | - |
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| (noun) any skeletal muscle that draws a body part down | Synonyms: depressor muscle |
| (noun) any nerve whose activity tends to reduce the activity or tone of the body part it serves | Synonyms: depressor nerve |
| deregulating | (noun) the act of freeing from regulation (especially from governmental regulations) | Synonyms: deregulation |
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| deregulation | (noun) the act of freeing from regulation (especially from governmental regulations) | Synonyms: deregulating |
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| derelict | (noun) a ship abandoned on the high seas | Synonyms: abandoned ship |
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| (noun) a person without a home, job, or property | - |
| dereliction | (noun) willful negligence | - |
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| (noun) a tendency to be negligent and uncaring | Synonyms: delinquency, willful neglect |
| derriere | (noun) the fleshy part of the human body that you sit on | Synonyms: arse, ass, backside, behind, bottom, bum, buns, butt, buttocks, can, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail, tail end, tooshie, tush |
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| desegregation | (noun) the action of incorporating a racial or religious group into a community | Synonyms: integrating, integration |
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| desire | (noun) an inclination to want things | - |
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| (noun) the feeling that accompanies an unsatisfied state | - |
| (noun) something that is desired | - |
| deterrence | (noun) the act or process of discouraging actions or preventing occurrences by instilling fear or doubt or anxiety | - |
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| (noun) a communication that makes you afraid to try something | Synonyms: determent, intimidation |
| (noun) a negative motivational influence | Synonyms: disincentive |
| deterrent | (noun) something immaterial that interferes with or delays action or progress | Synonyms: balk, baulk, check, handicap, hinderance, hindrance, impediment |
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| devourer | (noun) someone who eats greedily or voraciously | - |
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| diaeresis | (noun) a diacritical mark (two dots) placed over a vowel to indicate that it does not form a diphthong with an adjacent vowel | Synonyms: dieresis |
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| diaphoresis | (noun) the process of the sweat glands of the skin secreting a salty fluid | Synonyms: hidrosis, perspiration, sudation, sweating |
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| diaphoretic | (noun) used to produce perspiration | - |
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| dieresis | (noun) a diacritical mark (two dots) placed over a vowel to indicate that it does not form a diphthong with an adjacent vowel | Synonyms: diaeresis |
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| diethylmalonylurea | (noun) a barbiturate used as a hypnotic | Synonyms: barbital, barbitone, diethylbarbituric acid, veronal |
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| difference | (noun) the quality of being unlike or dissimilar | - |
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| (noun) a disagreement or argument about something important | Synonyms: conflict, difference of opinion, dispute |
| (noun) a variation that deviates from the standard or norm | Synonyms: departure, deviation, divergence |
| (noun) the number that remains after subtraction; the number that when added to the subtrahend gives the minuend | Synonyms: remainder |
| (noun) a significant change | - |
| differentia | (noun) distinguishing characteristics (especially in different species of a genus) | - |
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| differential | (noun) a bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves | Synonyms: differential gear |
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| (noun) a quality that differentiates between similar things | - |
| (noun) the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx | Synonyms: derivative, derived function, differential coefficient, first derivative |
| differentiation | (noun) the mathematical process of obtaining the derivative of a function | - |
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| (noun) a discrimination between things as different and distinct on the basis of their characteristics or attributes | Synonyms: distinction |
| (noun) (biology) the structural adaptation of some body part for a particular function | Synonyms: specialisation, specialization |
| differentiator | (noun) a person who (or that which) differentiates | Synonyms: discriminator |
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| digression | (noun) a turning aside (of your course or attention or concern) | Synonyms: deflection, deflexion, deviation, divagation, diversion |
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| (noun) wandering from the main path of a journey | Synonyms: excursion |
| (noun) a message that departs from the main subject | Synonyms: aside, divagation, excursus, parenthesis |
| digressiveness | (noun) The characteristic quality of poetry that is marked by departure from the subject, course, or idea at hand; or by an exploration of a different or unrelated concern. | - |
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| dihydrostreptomycin | (noun) antibiotic consisting of a hydrogenated form of streptomycin; used against tuberculosis and tularemia and Gram-negative organisms | - |
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| dinnerware | (noun) the tableware (plates and platters and serving bowls etc.) used in serving a meal | - |
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| dioptre | (noun) a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists | Synonyms: diopter |
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| direction | (noun) the act of managing something | Synonyms: management |
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| (noun) the act of setting and holding a course | Synonyms: guidance, steering |
| (noun) a general course along which something has a tendency to develop | - |
| (noun) the concentration of attention or energy on something | Synonyms: centering, centring, focal point, focus, focusing, focussing |
| (noun) something that provides direction or advice as to a decision or course of action | Synonyms: counsel, counseling, counselling, guidance |
| (noun) a formal statement of a command or injunction to do something | Synonyms: charge, commission |
| (noun) a message describing how something is to be done | Synonyms: instruction |
| (noun) a line leading to a place or point | Synonyms: way |
| (noun) the spatial relation between something and the course along which it points or moves | - |
| directionality | (noun) the property of a microphone or antenna of being more sensitive in one direction than in another | Synonyms: directivity |
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| (noun) the property of being directional or maintaining a direction | - |
| directioner | (noun) a fan on the band One Direction | - |
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| directive | (noun) a pronouncement encouraging or banning some activity | - |
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| directiveness | (noun) the quality of being directive | Synonyms: directivity |
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| directivity | (noun) the property of a microphone or antenna of being more sensitive in one direction than in another | Synonyms: directionality |
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| (noun) the quality of being directive | Synonyms: directiveness |
| directmate | (noun) A type of problem where White, moving first, is required to checkmate Black in a specified number of moves against any defence. | - |
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| directness | (noun) trueness of course toward a goal | Synonyms: straightness |
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| (noun) the quality of being honest and straightforward in attitude and speech | Synonyms: candidness, candor, candour, forthrightness, frankness |
| director | (noun) someone who controls resources and expenditures | Synonyms: manager, managing director |
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| (noun) the person who leads a musical group | Synonyms: conductor, music director |
| (noun) someone who supervises the actors and directs the action in the production of a show | Synonyms: theater director, theatre director |
| (noun) member of a board of directors | - |
| (noun) the person who directs the making of a film | Synonyms: film director |