| deuterium | (noun) an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen) | Synonyms: heavy hydrogen |
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| deuteron | (noun) the nucleus of deuterium; consists of one proton and one neutron; used as a bombarding particle in accelerators | - |
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| deutzia | (noun) any of various shrubs of the genus Deutzia having usually toothed opposite leaves and shredding bark and white or pink flowers in loose terminal clusters | - |
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| devolution | (noun) the delegation of authority (especially from a central to a regional government) | Synonyms: devolvement |
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| (noun) the process of declining from a higher to a lower level of effective power or vitality or essential quality | Synonyms: degeneration |
| devoutness | (noun) piety by virtue of being devout | Synonyms: religiousness |
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| dilutant | (noun) a diluting agent | Synonyms: diluent, thinner |
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| dilution | (noun) weakening (reducing the concentration) by the addition of water or a thinner | - |
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| (noun) a diluted solution | - |
| diminution | (noun) the act of decreasing or reducing something | Synonyms: decrease, reduction, step-down |
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| (noun) the statement of a theme in notes of lesser duration (usually half the length of the original) | - |
| (noun) change toward something smaller or lower | Synonyms: decline |
| diminutive | (noun) a word that is formed with a suffix (such as -let or -kin) to indicate smallness | - |
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| diminutiveness | (noun) the property of being very small in size | Synonyms: minuteness, petiteness, tininess, weeness |
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| dimout | (noun) darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft) | Synonyms: blackout, brownout |
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| disputant | (noun) a person who disputes; who is good at or enjoys controversy | Synonyms: controversialist, eristic |
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| disputation | (noun) the formal presentation of a stated proposition and the opposition to it (usually followed by a vote) | Synonyms: debate, public debate |
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| (noun) a contentious speech act; a dispute where there is strong disagreement | Synonyms: arguing, argument, contention, contestation, controversy, disceptation, tilt |
| dispute | (noun) coming into conflict with | Synonyms: contravention |
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| (noun) a disagreement or argument about something important | Synonyms: conflict, difference, difference of opinion |
| disreputability | (noun) dishonorableness by virtue of lacking respectability or a good reputation | Synonyms: disreputableness, unrespectability |
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| disreputableness | (noun) dishonorableness by virtue of lacking respectability or a good reputation | Synonyms: disreputability, unrespectability |
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| disrepute | (noun) the state of being held in low esteem | Synonyms: discredit |
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| dissoluteness | (noun) indiscipline with regard to sensuous pleasures | Synonyms: incontinence, self-gratification |
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| dissolution | (noun) the termination or disintegration of a relationship (between persons or nations) | Synonyms: breakup |
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| (noun) the termination of a meeting | Synonyms: adjournment |
| (noun) dissolute indulgence in sensual pleasure | Synonyms: dissipation, licentiousness, looseness, profligacy |
| (noun) separation into component parts | Synonyms: disintegration |
| (noun) the process of going into solution | Synonyms: dissolving |
| distributary | (noun) a branch of a river that flows away from the main stream and does not rejoin it | - |
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| distributer | (noun) electrical device that distributes voltage to the spark plugs of a gasoline engine in the order of the firing sequence | Synonyms: distributor, electrical distributor |
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| (noun) someone who markets merchandise | Synonyms: distributor |
| distribution | (noun) the act of distributing or spreading or apportioning | - |
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| (noun) the commercial activity of transporting and selling goods from a producer to a consumer | - |
| (noun) the spatial or geographic property of being scattered about over a range, area, or volume | Synonyms: dispersion |
| (noun) (statistics) an arrangement of values of a variable showing their observed or theoretical frequency of occurrence | Synonyms: statistical distribution |
| distributor | (noun) electrical device that distributes voltage to the spark plugs of a gasoline engine in the order of the firing sequence | Synonyms: distributer, electrical distributor |
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| (noun) a company that markets merchandise | - |
| (noun) someone who markets merchandise | Synonyms: distributer |
| (noun) a person with authority to allot or deal out or apportion | Synonyms: allocator |
| donut | (noun) a small ring-shaped friedcake | Synonyms: doughnut, sinker |
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| doughnut | (noun) a small ring-shaped friedcake | Synonyms: donut, sinker |
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| (noun) a toroidal shape | Synonyms: anchor ring, annulus, halo, ring |
| dropout | (noun) someone who quits school before graduation | - |
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| (noun) someone who withdraws from a social group or environment | - |
| drouth | (noun) a shortage of rainfall | Synonyms: drought |
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| (noun) a prolonged shortage | Synonyms: drought |
| druthers | (noun) the right or chance to choose | Synonyms: preference |
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| dugout | (noun) a fortification of earth; mostly or entirely below ground | Synonyms: bunker |
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| (noun) either of two low shelters on either side of a baseball diamond where the players and coaches sit during the game | - |
| (noun) a canoe made by hollowing out and shaping a large log | Synonyms: dugout canoe, pirogue |
| (noun) a shelter for humans or domesticated animals and livestock based on a hole or depression dug into the ground; can be fully recessed into the earth, with a flat roof covered by ground, semi-recessed, with a constructed wood or sod roof standing out, or dug into a hillside. | Synonyms: dug-out, pit-house, pithouse |
| dutifulness | (noun) piety by virtue of devotion to duty | - |
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| duty | (noun) the social force that binds you to the courses of action demanded by that force | Synonyms: obligation, responsibility |
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| (noun) work that you are obliged to perform for moral or legal reasons | - |
| (noun) a government tax on imports or exports | Synonyms: tariff |
| earthnut | (noun) edible subterranean fungus of the genus Tuber | Synonyms: truffle |
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| (noun) pod of the peanut vine containing usually 2 nuts or seeds; `groundnut' and `monkey nut' are British terms | Synonyms: goober, goober pea, groundnut, monkey nut, peanut |
| (noun) a common European plant having edible tubers with the flavor of roasted chestnuts | Synonyms: Conopodium denudatum |
| (noun) any of various highly prized edible subterranean fungi of the genus Tuber; grow naturally in southwestern Europe | Synonyms: earth-ball, truffle |
| edutainment | (noun) entertainment that is intended to be educational | - |
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| eelpout | (noun) marine eellike mostly bottom-dwelling fishes of northern seas | Synonyms: pout |
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| (noun) elongate freshwater cod of northern Europe and Asia and North America having barbels around its mouth | Synonyms: burbot, cusk, ling, Lota lota |
| electrocautery | (noun) application of a needle heated by an electric current to destroy tissue (as to remove warts) | - |
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| electrocution | (noun) killing by electric shock | - |
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| (noun) execution by electricity | Synonyms: burning |
| electrocutioner | (noun) an executioner who uses electricity to kill the condemned person | - |
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| elocution | (noun) an expert manner of speaking involving control of voice and gesture | - |
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| elocutionist | (noun) a public speaker trained in voice production and gesture and delivery | - |
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| elution | (noun) the process of extracting one material from another by washing with a solvent to remove adsorbed material from an adsorbent (as in washing of loaded ion-exchange resins to remove captured ions); used to obtain uranium ions | - |
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| equidistribution | (noun) a flat distribution having equal frequencies of occurrence | - |
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| escutcheon | (noun) a shield; especially one displaying a coat of arms | Synonyms: scutcheon |
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| (noun) (nautical) a plate on a ship's stern on which the name is inscribed | - |
| (noun) a flat protective covering (on a door or wall etc) to prevent soiling by dirty fingers | Synonyms: finger plate, scutcheon |
| eutectic | (noun) a mixture of substances having a minimum melting point | - |
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| euthanasia | (noun) the act of killing someone painlessly (especially someone suffering from an incurable illness) | Synonyms: mercy killing |
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| euthenics | (noun) the study of methods of improving human well-being and efficient functioning by improving environmental conditions | - |
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| eutherian | (noun) mammals having a placenta; all mammals except monotremes and marsupials | Synonyms: eutherian mammal, placental, placental mammal |
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| eutrophication | (noun) excessive nutrients in a lake or other body of water, usually caused by runoff of nutrients (animal waste, fertilizers, sewage) from the land, which causes a dense growth of plant life; the decomposition of the plants depletes the supply of oxygen, leading to the death of animal life | - |
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| evolution | (noun) (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms | Synonyms: organic evolution, phylogenesis, phylogeny |
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| (noun) a process in which something passes by degrees to a different stage (especially a more advanced or mature stage) | Synonyms: development |
| evolutionism | (noun) (biology) a scientific theory of the origin of species of plants and animals | Synonyms: theory of evolution, theory of organic evolution |
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| evolutionist | (noun) a person who believes in organic evolution | - |
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| executability | (noun) capability of being executed | - |
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| executant | (noun) a performer (usually of musical works) | - |
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| executing | (noun) putting a condemned person to death | Synonyms: capital punishment, death penalty, execution |
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| execution | (noun) putting a condemned person to death | Synonyms: capital punishment, death penalty, executing |
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| (noun) unlawful premeditated killing of a human being by a human being | Synonyms: murder, slaying |
| (noun) the act of performing; of doing something successfully; using knowledge as distinguished from merely possessing it | Synonyms: carrying into action, carrying out, performance |
| (noun) the act of accomplishing some aim or executing some order | Synonyms: carrying out, implementation |
| (noun) a routine court order that attempts to enforce the judgment that has been granted to a plaintiff by authorizing a sheriff to carry it out | Synonyms: writ of execution |
| (noun) (law) the completion of a legal instrument (such as a contract or deed) by signing it (and perhaps sealing and delivering it) so that it becomes legally binding and enforceable | Synonyms: execution of instrument |
| (noun) (computer science) the process of carrying out an instruction by a computer | Synonyms: instruction execution |
| executioner | (noun) an official who inflicts capital punishment in pursuit of a warrant | Synonyms: public executioner |
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| executive | (noun) persons who administer the law | - |
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| (noun) a person responsible for the administration of a business | Synonyms: executive director |
| (noun) someone who manages a government agency or department | Synonyms: administrator |
| executor | (noun) a person appointed by a testator to carry out the terms of the will | - |
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| executrix | (noun) a woman executor | - |
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| fadeout | (noun) a slow or gradual disappearance | Synonyms: receding |
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| (noun) a gradual temporary loss of a transmitted signal due to electrical disturbances | - |
| fallout | (noun) any adverse and unwanted secondary effect | Synonyms: side effect |
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| (noun) the radioactive particles that settle to the ground after a nuclear explosion | Synonyms: radioactive dust |
| fauteuil | (noun) an upholstered armchair | - |
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| flautist | (noun) someone who plays the flute | Synonyms: flute player, flutist |
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| flouter | (noun) someone who jeers or mocks or treats something with contempt or calls out in derision | Synonyms: jeerer, mocker, scoffer |
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| flute | (noun) a high-pitched woodwind instrument; a slender tube closed at one end with finger holes on one end and an opening near the closed end across which the breath is blown | Synonyms: transverse flute |
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| (noun) a groove or furrow in cloth etc (particularly a shallow concave groove on the shaft of a column) | Synonyms: fluting |
| (noun) a tall narrow wineglass | Synonyms: champagne flute, flute glass |
| fluting | (noun) a groove or furrow in cloth etc (particularly a shallow concave groove on the shaft of a column) | Synonyms: flute |
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| flutist | (noun) someone who plays the flute | Synonyms: flautist, flute player |
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| flutter | (noun) the act of moving back and forth | Synonyms: flicker, waver |
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| (noun) the motion made by flapping up and down | Synonyms: flap, flapping, fluttering |
| (noun) abnormally rapid beating of the auricles of the heart (especially in a regular rhythm); can result in heart block | - |
| (noun) a disorderly outburst or tumult | Synonyms: commotion, disruption, disturbance, hoo-ha, hoo-hah, hurly burly, kerfuffle, to-do |
| fluttering | (noun) the motion made by flapping up and down | Synonyms: flap, flapping, flutter |
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| foldout | (noun) an oversize page that is folded in to a book or magazine | Synonyms: gatefold |
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| frogmouth | (noun) insectivorous bird of Australia and southeastern Asia having a wide frog-like mouth | - |
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| futility | (noun) uselessness as a consequence of having no practical result | - |
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| futon | (noun) mattress consisting of a pad of cotton batting that is used for sleeping on the floor or on a raised frame | - |
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| future | (noun) bulk commodities bought or sold at an agreed price for delivery at a specified future date | - |
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| (noun) a verb tense that expresses actions or states in the future | Synonyms: future tense |
| (noun) the time yet to come | Synonyms: futurity, hereafter, time to come |
| futurism | (noun) the position that the meaning of life should be sought in the future | - |
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| (noun) an artistic movement in Italy around 1910 that tried to express the energy and values of the machine age | - |
| futurist | (noun) someone who predicts the future | Synonyms: fantast |
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| (noun) a theologian who believes that the Scripture prophecies of the Apocalypse (the Book of Revelation) will be fulfilled in the future | - |
| futuristics | (noun) the study or prediction of future developments on the basis of existing conditions | Synonyms: futurology |
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| futurity | (noun) the quality of being in or of the future | - |
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| (noun) the time yet to come | Synonyms: future, hereafter, time to come |
| futurology | (noun) the study or prediction of future developments on the basis of existing conditions | Synonyms: futuristics |
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| gadabout | (noun) a restless seeker after amusement or social companionship | - |
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| gamut | (noun) a complete extent or range: | - |
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| (noun) the entire scale of musical notes | - |
| glut | (noun) the quality of being so overabundant that prices fall | Synonyms: oversupply, surfeit |
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| glutamate | (noun) a salt or ester of glutamic acid | - |
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| glutamine | (noun) a crystalline amino acid occurring in proteins; important in protein metabolism | - |
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| glute | (noun) any one of three large skeletal muscles that form the buttock and move the thigh | Synonyms: gluteal muscle, gluteus, gluteus muscle |
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| glutelin | (noun) a simple protein found in the seeds of cereals | - |
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| gluten | (noun) a protein substance that remains when starch is removed from cereal grains; gives cohesiveness to dough | - |
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| glutethimide | (noun) sedative (trade name Doriden) used to treat some sleep disorders | Synonyms: Doriden |
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| gluteus | (noun) any one of three large skeletal muscles that form the buttock and move the thigh | Synonyms: glute, gluteal muscle, gluteus muscle |
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| glutinosity | (noun) the property of having a viscosity like jelly | Synonyms: gelatinousness, glutinousness |
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| glutinousness | (noun) the property of having a viscosity like jelly | Synonyms: gelatinousness, glutinosity |
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| glutton | (noun) musteline mammal of northern Eurasia | Synonyms: Gulo gulo, wolverine |
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| (noun) a person who is devoted to eating and drinking to excess | Synonyms: gourmand, gourmandizer, trencherman |
| gluttony | (noun) eating to excess (personified as one of the deadly sins) | Synonyms: gula, overeating |
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| (noun) habitual eating to excess | - |
| goalmouth | (noun) (sports) the area immediately in front of the goal | - |
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| gomuti | (noun) Malaysian feather palm with base densely clothed with fibers; yields a sweet sap used in wine and trunk pith yields sago | Synonyms: Arenga pinnata, gomuti palm, sugar palm |
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| gout | (noun) a painful inflammation of the big toe and foot caused by defects in uric acid metabolism resulting in deposits of the acid and its salts in the blood and joints | Synonyms: gouty arthritis, urarthritis |
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| groundnut | (noun) nutlike tuber; important food of Native Americans | Synonyms: potato bean, wild bean |
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| (noun) pod of the peanut vine containing usually 2 nuts or seeds; `groundnut' and `monkey nut' are British terms | Synonyms: earthnut, goober, goober pea, monkey nut, peanut |
| (noun) a North American vine with fragrant blossoms and edible tubers; important food crop of Native Americans | Synonyms: Apios americana, Apios tuberosa, groundnut vine, Indian potato, potato bean, wild bean |
| grout | (noun) a thin mortar that can be poured and used to fill cracks in masonry or brickwork | - |
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| gut | (noun) a strong cord made from the intestines of sheep and used in surgery | Synonyms: catgut |
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| (noun) the part of the alimentary canal between the stomach and the anus | Synonyms: bowel, intestine |
| (noun) a narrow channel or strait | - |
| gutlessness | (noun) the trait of lacking courage and determination; fearful of loss or injury | - |
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| guts | (noun) fortitude and determination | Synonyms: backbone, grit, gumption, moxie, sand |
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