| bogbean | (noun) perennial plant of Europe and America having racemes of white or purplish flowers and intensely bitter trifoliate leaves; often rooting at water margin and spreading across the surface | Synonyms: bog myrtle, buckbean, marsh trefoil, Menyanthes trifoliata, water shamrock |
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| bomber | (noun) a military aircraft that drops bombs during flight | - |
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| (noun) a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States | Synonyms: Cuban sandwich, grinder, hero, hero sandwich, hoagie, hoagy, Italian sandwich, poor boy, sub, submarine, submarine sandwich, torpedo, wedge, zep |
| (noun) a person who plants bombs | - |
| boxberry | (noun) spicy red berrylike fruit; source of wintergreen oil | Synonyms: checkerberry, spiceberry, teaberry, wintergreen |
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| (noun) creeping woody plant of eastern North America with shiny evergreen leaves and scarlet berries | Synonyms: Mitchella repens, partridgeberry, twinberry |
| boysenberry | (noun) large raspberry-flavored fruit; cross between blackberries and raspberries | - |
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| (noun) cultivated hybrid bramble of California having large dark wine-red fruit with a flavor resembling raspberries | Synonyms: boysenberry bush |
| bribe | (noun) payment made to a person in a position of trust to corrupt his judgment | Synonyms: payoff |
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| briber | (noun) someone who pays (or otherwise incites) you to commit a wrongful act | Synonyms: suborner |
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| bribery | (noun) the practice of offering something (usually money) in order to gain an illicit advantage | Synonyms: graft |
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| buckbean | (noun) perennial plant of Europe and America having racemes of white or purplish flowers and intensely bitter trifoliate leaves; often rooting at water margin and spreading across the surface | Synonyms: bog myrtle, bogbean, marsh trefoil, Menyanthes trifoliata, water shamrock |
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| bugbear | (noun) an object of dread or apprehension | Synonyms: hobgoblin |
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| (noun) an imaginary monster used to frighten children | Synonyms: bogeyman, booger, boogeyman, bugaboo |
| bumblebee | (noun) robust hairy social bee of temperate regions | Synonyms: humblebee |
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| bunchberry | (noun) creeping perennial herb distinguished by red berries and clustered leaf whorls at the tips of shoots; Greenland to Alaska | Synonyms: Cornus canadensis, crackerberry, dwarf cornel, pudding berry |
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| buncombe | (noun) unacceptable behavior (especially ludicrously false statements) | Synonyms: bunk, bunkum, guff, hogwash, rot |
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| butterbean | (noun) small flat green bean similar to lima beans | Synonyms: butter bean, civet bean, sieva bean |
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| caber | (noun) a heavy wooden pole (such as the trunk of a young fir) that is tossed as a test of strength (in the Highlands of northern Scotland) | - |
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| caliber | (noun) a degree or grade of excellence or worth | Synonyms: calibre, quality |
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| (noun) diameter of a tube or gun barrel | Synonyms: bore, calibre, gauge |
| camber | (noun) the alignment of the wheels of a motor vehicle closer together at the bottom than at the top | - |
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| (noun) a slope in the turn of a road or track; the outside is higher than the inside in order to reduce the effects of centrifugal force | Synonyms: bank, cant |
| (noun) a slight convexity (as of the surface of a road) | - |
| candleberry | (noun) deciduous aromatic shrub of eastern North America with grey-green wax-coated berries | Synonyms: bayberry, Myrica pensylvanica, swamp candleberry, waxberry |
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| caribe | (noun) small voraciously carnivorous freshwater fishes of South America that attack and destroy living animals | Synonyms: pirana, piranha |
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| cascabel | (noun) a bell attached to a sleigh, or to the harness of a horse that is pulling a sleigh | Synonyms: sleigh bell |
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| cerebellum | (noun) a major division of the vertebrate brain; situated above the medulla oblongata and beneath the cerebrum in humans | - |
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| chamber | (noun) a natural or artificial enclosed space | - |
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| (noun) a room used primarily for sleeping | Synonyms: bedchamber, bedroom, sleeping accommodation, sleeping room |
| (noun) a room where a judge transacts business | - |
| (noun) an enclosed volume in the body | - |
| (noun) a deliberative or legislative or administrative or judicial assembly | - |
| chamberlain | (noun) the treasurer of a municipal corporation | - |
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| (noun) an officer who manages the household of a king or nobleman | - |
| chambermaid | (noun) a maid who is employed to clean and care for bedrooms (now primarily in hotels) | Synonyms: fille de chambre |
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| chamberpot | (noun) a receptacle for urination or defecation in the bedroom | Synonyms: potty, thunder mug |
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| checkerberry | (noun) spicy red berrylike fruit; source of wintergreen oil | Synonyms: boxberry, spiceberry, teaberry, wintergreen |
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| (noun) creeping shrub of eastern North America having white bell-shaped flowers followed by spicy red berrylike fruit and shiny aromatic leaves that yield wintergreen oil | Synonyms: creeping wintergreen, Gaultheria procumbens, ground-berry, groundberry, mountain tea, teaberry, wintergreen |
| childbearing | (noun) the parturition process in human beings; having a baby; the process of giving birth to a child | Synonyms: accouchement, childbirth, vaginal birth |
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| childbed | (noun) concluding state of pregnancy; from the onset of contractions to the birth of a child | Synonyms: confinement, labor, labour, lying-in, parturiency, travail |
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| chinaberry | (noun) tree of northern India and China having purple blossoms and small inedible yellow fruits; naturalized in the southern United States as a shade tree | Synonyms: azedarach, azederach, China tree, chinaberry tree, Melia azedarach, Melia azederach, Persian lilac, pride-of-India |
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| (noun) evergreen of tropical America having pulpy fruit containing saponin which was used as soap by Native Americans | Synonyms: China tree, false dogwood, jaboncillo, Sapindus saponaria |
| chlorobenzene | (noun) a colorless volatile flammable liquid with an almond odor that is made from chlorine and benzene; used as a solvent and in the production of phenol and DDT and other organic compounds | - |
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| chlorobenzylidenemalononitrile | (noun) a tear gas that is stronger than CN gas but wears off faster; can be deployed by grenades or cluster bombs; can cause skin burns and fatal pulmonary edema | Synonyms: CS gas |
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| chrysoberyl | (noun) a rare hard yellow green mineral consisting of beryllium aluminate in crystal form; used as a gemstone | - |
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| clabber | (noun) raw milk that has soured and thickened | - |
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| clamber | (noun) an awkward climb | - |
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| claustrophobe | (noun) a person suffering from claustrophobia | - |
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| climber | (noun) an iron spike attached to the shoe to prevent slipping on ice when walking or climbing | Synonyms: climbing iron, crampon, crampoon |
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| (noun) someone who climbs as a sport; especially someone who climbs mountains | - |
| (noun) someone seeking social prominence by obsequious behavior | Synonyms: social climber |
| (noun) someone who ascends on foot | Synonyms: mounter |
| (noun) a vine or climbing plant that readily grows up a support or over other plants | - |
| clobber | (noun) informal terms for personal possessions | Synonyms: stuff |
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| cloudberry | (noun) creeping raspberry of north temperate regions with yellow or orange berries | Synonyms: bakeapple, baked-apple berry, dwarf mulberry, Rubus chamaemorus, salmonberry |
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| clumber | (noun) a thickset spaniel with longish silky hair | Synonyms: clumber spaniel |
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| cobber | (noun) Australian term for a pal | - |
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| coffeeberry | (noun) evergreen shrub of western United States bearing small red or black fruits | Synonyms: California buckthorn, California coffee, Rhamnus californicus |
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| comber | (noun) a machine that separates and straightens the fibers of cotton or wool | - |
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| (noun) a long curling sea wave | - |
| (noun) a person who separates and straightens the fibers of cotton or wool | - |
| coralbells | (noun) perennial plant of the western United States having bright red flowers in feathery spikes; used as an ornamental | Synonyms: Heuchera sanguinea |
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| coralberry | (noun) shrub with coral-red berries; Japan to northern India | Synonyms: Ardisia crenata, spiceberry |
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| (noun) North American deciduous shrub cultivated for it abundant clusters of coral-red berrylike fruits | Synonyms: Indian currant, Symphoricarpos orbiculatus |
| corbel | (noun) (architecture) a triangular bracket of brick or stone (usually of slight extent) | Synonyms: truss |
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| cowbell | (noun) a bell hung around the neck of cow so that the cow can be easily located | - |
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| cowberry | (noun) tart red berries similar to American cranberries but smaller | Synonyms: lingonberry, lowbush cranberry, mountain cranberry |
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| (noun) low evergreen shrub of high north temperate regions of Europe and Asia and America bearing red edible berries | Synonyms: foxberry, lingberry, lingenberry, lingonberry, mountain cranberry, Vaccinium vitis-idaea |
| crabbedness | (noun) a disposition to be ill-tempered | Synonyms: crabbiness, crossness |
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| crackerberry | (noun) creeping perennial herb distinguished by red berries and clustered leaf whorls at the tips of shoots; Greenland to Alaska | Synonyms: bunchberry, Cornus canadensis, dwarf cornel, pudding berry |
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| cranberry | (noun) very tart red berry used for sauce or juice | - |
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| (noun) any of numerous shrubs of genus Vaccinium bearing cranberries | - |
| crossbeam | (noun) a horizontal beam that extends across something | Synonyms: crosspiece, trave, traverse |
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| crossbench | (noun) any of the seats in the House of Commons used by members who do not vote regularly with either the government or the Opposition | - |
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| crossbencher | (noun) a member of the House of Commons who does not vote regularly with either the government or the Opposition | - |
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| crowberry | (noun) a low evergreen shrub with small purple flowers and black berrylike fruit | - |
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| crownbeard | (noun) any plant of the genus Verbesina having clustered white or yellow flower heads | Synonyms: crown-beard, crown beard |
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| cube | (noun) a block in the (approximate) shape of a cube | Synonyms: square block |
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| (noun) any of several tropical American woody plants of the genus Lonchocarpus whose roots are used locally as a fish poison and commercially as a source of rotenone | - |
| (noun) the product of three equal terms | Synonyms: third power |
| (noun) a hexahedron with six equal squares as faces | Synonyms: regular hexahedron |
| (noun) a three-dimensional shape with six square or rectangular sides | Synonyms: block |
| cubeb | (noun) a cigarette containing cubeb | Synonyms: cubeb cigarette |
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| (noun) tropical southeast Asian shrubby vine bearing spicy berrylike fruits | Synonyms: cubeb vine, Java pepper, Piper cubeba |
| (noun) spicy fruit of the cubeb vine; when dried and crushed is used medicinally or in perfumery and sometimes smoked in cigarettes | - |
| cucumber | (noun) cylindrical green fruit with thin green rind and white flesh eaten as a vegetable; related to melons | Synonyms: cuke |
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| (noun) a melon vine of the genus Cucumis; cultivated from earliest times for its cylindrical green fruit | Synonyms: cucumber vine, Cucumis sativus |
| cudbear | (noun) a purplish dye obtained from orchil lichens | Synonyms: archil, orchil |
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| cumbersomeness | (noun) trouble in carrying or managing caused by bulk or shape | Synonyms: awkwardness, unwieldiness |
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| 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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| cyberart | (noun) art that is produced with the help of computer hardware and software | - |
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| cybercafe | (noun) a cafe whose customers sit at computer terminals and log on to the internet while they eat and drink | - |
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| cybercrime | (noun) crime committed using a computer and the internet to steal a person's identity or sell contraband or stalk victims or disrupt operations with malevolent programs | - |
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| cyberculture | (noun) the culture that emerges from the use of computers for communication and entertainment and business | - |
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| cybernation | (noun) the control of processes by computer | Synonyms: computerization |
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| cybernaut | (noun) a computer user who uses the internet; someone who explores cyberspace | - |
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| cybernetics | (noun) (biology) the field of science concerned with processes of communication and control (especially the comparison of these processes in biological and artificial systems) | - |
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| cyberphobia | (noun) irrational fear of computers or technology | - |
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| cyberpunk | (noun) a genre of fast-paced science fiction involving oppressive futuristic computerized societies | - |
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| (noun) a writer of science fiction set in a lawless subculture of an oppressive society dominated by computer technology | - |
| (noun) a programmer who breaks into computer systems in order to steal or change or destroy information as a form of cyber-terrorism | Synonyms: cyber-terrorist |
| cybersex | (noun) sexual arousal involving communication on the internet | - |
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| cyberspace | (noun) a computer network consisting of a worldwide network of computer networks that use the TCP/IP network protocols to facilitate data transmission and exchange | Synonyms: internet, net |
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| cyberwar | (noun) an assault on electronic communication networks | Synonyms: cyber-terrorism |
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| cyclobenzaprine | (noun) muscle relaxant (trade name Flexeril) used for muscle spasms or acute injury | Synonyms: Flexeril |
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| dangleberry | (noun) huckleberry of the eastern United States with pink flowers and sweet blue fruit | Synonyms: dangle-berry, Gaylussacia frondosa |
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| dauber | (noun) an unskilled painter | - |
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| daybed | (noun) a long chair; for reclining | Synonyms: chaise, chaise longue |
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| (noun) an armless couch; a seat by day and a bed by night | Synonyms: divan bed |
| deadbeat | (noun) someone who fails to meet a financial obligation | Synonyms: defaulter |
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| deathbed | (noun) the bed on which a person dies | - |
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| (noun) the last few hours before death | - |
| 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 |
| decibel | (noun) a logarithmic unit of sound intensity; 10 times the logarithm of the ratio of the sound intensity to some reference intensity | Synonyms: dB |
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| deerberry | (noun) small branching blueberry common in marshy areas of the eastern United States having greenish or yellowish unpalatable berries reputedly eaten by deer | Synonyms: squaw huckleberry, Vaccinium stamineum |
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| deliberateness | (noun) the trait of thoughtfulness in action or decision | Synonyms: deliberation |
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| (noun) a rate demonstrating an absence of haste or hurry | Synonyms: deliberation, slowness, unhurriedness |
| deliberation | (noun) the trait of thoughtfulness in action or decision | Synonyms: deliberateness |
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| (noun) a rate demonstrating an absence of haste or hurry | Synonyms: deliberateness, slowness, unhurriedness |
| (noun) planning something carefully and intentionally | Synonyms: calculation |
| (noun) careful consideration | Synonyms: advisement, weighing |
| (noun) (usually plural) discussion of all sides of a question | - |
| delimber | (noun) a machine for removing limbs from trees with a saw or flailing chains. | Synonyms: stroke delimber |
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| dewberry | (noun) blackberry-like fruits of any of several trailing blackberry bushes | - |
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| (noun) any of several trailing blackberry brambles especially of North America | Synonyms: dewberry bush, running blackberry |
| diabetes | (noun) a polygenic disease characterized by abnormally high glucose levels in the blood; any of several metabolic disorders marked by excessive urination and persistent thirst | - |
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| diabetic | (noun) someone who has diabetes | - |
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| diatribe | (noun) thunderous verbal attack | Synonyms: fulmination |
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| dibber | (noun) a wooden hand tool with a pointed end; used to make holes in the ground for planting seeds or bulbs | Synonyms: dibble |
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| diethylstilbesterol | (noun) synthetic nonsteroid with the properties of estrogen; formerly used to treat menstrual problems but was found to be associated with vaginal cancers in the daughters of women so treated during pregnancy | Synonyms: DES, stilbesterol |
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| diethylstilbestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilboestrol, stilbestrol, stilboestrol |
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| disbelief | (noun) doubt about the truth of something | Synonyms: incredulity, mental rejection, scepticism, skepticism |
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| (noun) a rejection of belief | Synonyms: unbelief |
| dismemberment | (noun) the removal of limbs; being cut to pieces | Synonyms: taking apart |
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| disobedience | (noun) the failure to obey | Synonyms: noncompliance |
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| (noun) the trait of being unwilling to obey | - |
| disturber | (noun) a troubler who interrupts or interferes with peace and quiet; someone who causes disorder and commotion | - |
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| dombeya | (noun) any of various shrubs or small trees of the genus Dombeya grown for their rounded clusters of exquisite often sweet-scented flowers usually hanging beneath the leaves | - |
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| doorbell | (noun) a push button at an outer door that gives a ringing or buzzing signal when pushed | Synonyms: bell, buzzer |
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| dorbeetle | (noun) Old World dung beetle that flies with a droning sound | - |
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| downbeat | (noun) the first beat of a musical measure (as the conductor's arm moves downward) | - |
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| drumbeat | (noun) a vehement and vociferous advocacy of a cause | - |
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| (noun) (military) the beating of a drum as a signal for lowering the flag at sundown | - |
| (noun) the sound made by beating a drum | Synonyms: rataplan, rub-a-dub |