| cosmologist | (noun) an astronomer who studies the evolution and space-time relations of the universe | - |
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| counterrevolutionist | (noun) a revolutionary whose aim is to reverse the changes introduced by an earlier revolution | Synonyms: counter-revolutionist, counterrevolutionary |
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| counterterrorist | (noun) someone who attempts to prevent terrorism | - |
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| craniologist | (noun) someone who claims to be able to read your character from the shape of your skull | Synonyms: phrenologist |
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| criminologist | (noun) a specialist in criminology | - |
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| cristal | (noun) street names for methylenedioxymethamphetamine | Synonyms: Adam, disco biscuit, ecstasy, go, hug drug, X, XTC |
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| cristobalite | (noun) a white mineral consisting of silica; found in volcanic rocks | - |
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| cryptologist | (noun) decoder skilled in the analysis of codes and cryptograms | Synonyms: cryptanalyst, cryptographer |
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| cubist | (noun) an artist who adheres to the principles of cubism | - |
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| cultist | (noun) a member of a religious cult | - |
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| (noun) a member of an unorthodox cult who generally lives outside of conventional society under the direction of a charismatic leader | - |
| cyclist | (noun) a person who rides a bicycle | Synonyms: bicycler, bicyclist, biker, wheeler |
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| cymbalist | (noun) a performer on the cymbals | - |
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| cytogeneticist | (noun) a geneticist who specializes in the cellular components associated with heredity | - |
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| cytologist | (noun) a biologist who studies the structure and function of cells | - |
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| defeatist | (noun) someone who is resigned to defeat without offering positive suggestions | Synonyms: negativist |
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| deipnosophist | (noun) someone skilled at informal chitchat | - |
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| deist | (noun) a person who believes that God created the universe and then abandoned it | - |
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| demister | (noun) heater that removes mist from the windshield of a car | - |
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| demographist | (noun) a scientist who studies the growth and density of populations and their vital statistics | Synonyms: demographer, population scientist |
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| dentist | (noun) a person qualified to practice dentistry | Synonyms: dental practitioner, tooth doctor |
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| dentistry | (noun) the branch of medicine dealing with the anatomy and development and diseases of the teeth | Synonyms: dental medicine, odontology |
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| denturist | (noun) someone who makes dental appliances (bridges and dentures) | Synonyms: dental technician |
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| dermatologist | (noun) a doctor who specializes in the physiology and pathology of the skin | Synonyms: skin doctor |
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| determinist | (noun) anyone who submits to the belief that they are powerless to change their destiny | Synonyms: fatalist, predestinarian, predestinationist |
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| deviationist | (noun) an ideological defector from the party line (especially from orthodox communism) | - |
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| diabolist | (noun) an adherent of Satan or Satanism | Synonyms: Satanist |
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| diarist | (noun) someone who keeps a diary or journal | Synonyms: diary keeper, journalist |
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| diplomatist | (noun) an official engaged in international negotiations | Synonyms: diplomat |
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| distaff | (noun) the staff on which wool or flax is wound before spinning | - |
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| (noun) the sphere of work by women | - |
| distance | (noun) the property created by the space between two objects or points | - |
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| (noun) size of the gap between two places | Synonyms: length |
| (noun) indifference by personal withdrawal | Synonyms: aloofness |
| (noun) a distant region | - |
| (noun) the interval between two times | Synonyms: space |
| (noun) a remote point in time | - |
| distaste | (noun) a feeling of intense dislike | Synonyms: antipathy, aversion |
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| distastefulness | (noun) the quality of being offensive | Synonyms: odiousness, offensiveness |
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| (noun) extreme unpalatability to the mouth | Synonyms: disgustingness, nauseatingness, sickeningness, unsavoriness |
| distemper | (noun) a method of painting in which the pigments are mixed with water and a binder; used for painting posters or murals or stage scenery | - |
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| (noun) a painting created with paint that is made by mixing the pigments with water and a binder | - |
| (noun) paint made by mixing the pigments with water and a binder | - |
| (noun) an angry and disagreeable mood | Synonyms: ill humor, ill humour |
| (noun) any of various infectious viral diseases of animals | - |
| distension | (noun) the act of expanding by pressure from within | Synonyms: distention |
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| (noun) the state of being stretched beyond normal dimensions | Synonyms: dilatation, distention |
| distention | (noun) the act of expanding by pressure from within | Synonyms: distension |
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| (noun) the state of being stretched beyond normal dimensions | Synonyms: dilatation, distension |
| distich | (noun) two items of the same kind | Synonyms: brace, couple, couplet, duad, duet, duo, dyad, pair, span, twain, twosome, yoke |
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| distillate | (noun) a purified liquid produced by condensation from a vapor during distilling; the product of distilling | Synonyms: distillation |
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| distillation | (noun) the process of purifying a liquid by boiling it and condensing its vapors | Synonyms: distillment |
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| (noun) a purified liquid produced by condensation from a vapor during distilling; the product of distilling | Synonyms: distillate |
| distiller | (noun) someone who distills alcoholic liquors | - |
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| distillery | (noun) a plant and works where alcoholic drinks are made by distillation | Synonyms: still |
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| distillment | (noun) the process of purifying a liquid by boiling it and condensing its vapors | Synonyms: distillation |
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| distinction | (noun) a distinguishing difference between similar things or people | - |
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| (noun) a discrimination between things as different and distinct on the basis of their characteristics or attributes | Synonyms: differentiation |
| (noun) an honor awarded to someone in recognition of achievement or superiority | - |
| (noun) high status importance owing to marked superiority | Synonyms: eminence, note, preeminence |
| distinctiveness | (noun) utter dissimilarity | Synonyms: disparateness |
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| (noun) a distinguishing trait | Synonyms: peculiarity, speciality, specialness, specialty |
| distinctness | (noun) the quality of being sharp and clear | Synonyms: sharpness |
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| (noun) the quality of being not alike; being distinct or different from that otherwise experienced or known | Synonyms: otherness, separateness |
| (noun) the state of being several and distinct | Synonyms: discreteness, separateness, severalty |
| distinguishability | (noun) Capability of being perceived as different or distinct. | - |
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| distomatosis | (noun) a disease of the liver (especially in sheep and cattle) caused by liver flukes and their by-products | Synonyms: black disease, liver rot, sheep rot |
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| distortion | (noun) the act of distorting something so it seems to mean something it was not intended to mean | Synonyms: overrefinement, straining, torture, twisting |
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| (noun) the mistake of misrepresenting the facts | - |
| (noun) a change for the worse | Synonyms: deformation |
| (noun) an optical phenomenon resulting from the failure of a lens or mirror to produce a good image | Synonyms: aberration, optical aberration |
| (noun) a change (usually undesired) in the waveform of an acoustic or analog electrical signal; the difference between two measurements of a signal (as between the input and output signal) | - |
| (noun) a shape resulting from distortion | Synonyms: distorted shape |
| distortionist | (noun) a painter who introduces distortions | - |
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| distraction | (noun) an entertainment that provokes pleased interest and distracts you from worries and vexations | Synonyms: beguilement |
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| (noun) the act of distracting; drawing someone's attention away from something | Synonyms: misdirection |
| (noun) mental turmoil | - |
| (noun) an obstacle to attention | - |
| distraint | (noun) the seizure and holding of property as security for payment of a debt or satisfaction of a claim | Synonyms: distress |
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| distress | (noun) the seizure and holding of property as security for payment of a debt or satisfaction of a claim | Synonyms: distraint |
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| (noun) psychological suffering | Synonyms: hurt, suffering |
| (noun) extreme physical pain | - |
| (noun) a state of adversity (danger or affliction or need) | - |
| distressfulness | (noun) the quality of arousing fear or distress | Synonyms: seriousness |
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| distressingness | (noun) the quality of being painful | Synonyms: painfulness |
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| 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 |
| district | (noun) a region marked off for administrative or other purposes | Synonyms: dominion, territorial dominion, territory |
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| distrust | (noun) the trait of not trusting others | Synonyms: distrustfulness, mistrust |
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| (noun) doubt about someone's honesty | Synonyms: misgiving, mistrust, suspicion |
| distrustfulness | (noun) the trait of not trusting others | Synonyms: distrust, mistrust |
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| disturbance | (noun) the act of disturbing something or someone; setting something in motion | - |
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| (noun) a noisy fight | Synonyms: affray, fray, ruffle |
| (noun) activity that is a malfunction, intrusion, or interruption | Synonyms: perturbation |
| (noun) electrical or acoustic activity that can disturb communication | Synonyms: interference, noise |
| (noun) a disorderly outburst or tumult | Synonyms: commotion, disruption, flutter, hoo-ha, hoo-hah, hurly burly, kerfuffle, to-do |
| (noun) (psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness | Synonyms: folie, mental disorder, mental disturbance, psychological disorder |
| (noun) an unhappy and worried mental state | Synonyms: perturbation, upset |
| disturber | (noun) a troubler who interrupts or interferes with peace and quiet; someone who causes disorder and commotion | - |
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| diversionist | (noun) someone who commits sabotage or deliberately causes wrecks | Synonyms: saboteur, wrecker |
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| dogmatist | (noun) a stubborn person of arbitrary or arrogant opinions | Synonyms: doctrinaire |
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| dramatist | (noun) someone who writes plays | Synonyms: playwright |
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| druggist | (noun) a health professional trained in the art of preparing and dispensing drugs | Synonyms: apothecary, chemist, pharmacist, pill pusher, pill roller |
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| dualist | (noun) an adherent of dualism | - |
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| duelist | (noun) a person who fights duels | Synonyms: dueler, dueller, duellist |
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| duellist | (noun) a person who fights duels | Synonyms: dueler, duelist, dueller |
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| dynamitist | (noun) a person who uses dynamite in a revolutionary cause | Synonyms: dynamiter |
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| eclecticist | (noun) someone who selects according to the eclectic method | Synonyms: eclectic |
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| ecologist | (noun) a biologist who studies the relation between organisms and their environment | - |
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| econometrist | (noun) an economist who uses statistical and mathematical methods | Synonyms: econometrician |
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| economist | (noun) an expert in the science of economics | Synonyms: economic expert |
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| editorialist | (noun) a journalist who writes editorials | Synonyms: columnist |
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| educationalist | (noun) a specialist in the theory of education | Synonyms: educationist |
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| educationist | (noun) a specialist in the theory of education | Synonyms: educationalist |
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| egoist | (noun) a self-centered person with little regard for others | Synonyms: egocentric |
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| (noun) a conceited and self-centered person | Synonyms: egotist, swellhead |
| egotist | (noun) a conceited and self-centered person | Synonyms: egoist, swellhead |
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| eisteddfod | (noun) any of several annual Welsh festivals involving artistic competitions (especially in singing) | - |
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| electrochemistry | (noun) branch of chemistry that deals with the chemical action of electricity and the production of electricity by chemical reactions | - |
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| electrologist | (noun) someone skilled in the use of electricity to remove moles or warts or hair roots | - |
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| electrotherapist | (noun) someone who specializes in the treatment of disease by electricity | - |
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| elegist | (noun) the author of a mournful poem lamenting the dead | - |
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| elitist | (noun) someone who believes in rule by an elite group | - |
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| elocutionist | (noun) a public speaker trained in voice production and gesture and delivery | - |
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| emancipationist | (noun) a reformer who favors abolishing slavery | Synonyms: abolitionist |
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| embryologist | (noun) a physician who specializes in embryology | - |
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| empiricist | (noun) a philosopher who subscribes to empiricism | - |
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| encyclopaedist | (noun) a person who compiles information for encyclopedias | Synonyms: encyclopedist |
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| encyclopedist | (noun) a person who compiles information for encyclopedias | Synonyms: encyclopaedist |
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| endocrinologist | (noun) physician who specializes in the diagnosis and treatment of conditions affecting the endocrine system | - |
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| endodontist | (noun) a dentist specializing in diseases of the dental pulp and nerve | - |
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| enlistee | (noun) any new member or supporter (as in the armed forces) | Synonyms: recruit |
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| enlisting | (noun) the act of getting recruits; enlisting people for the army (or for a job or a cause etc.) | Synonyms: recruitment |
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| enlistment | (noun) the act of enlisting (as in a military service) | - |
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| (noun) a period of time spent in military service | Synonyms: duty tour, hitch, term of enlistment, tour, tour of duty |
| enologist | (noun) a specialist in wine making | Synonyms: fermentologist, oenologist |
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| entomologist | (noun) a zoologist who studies insects | Synonyms: bug-hunter, bugologist |
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| environmentalist | (noun) someone who works to protect the environment from destruction or pollution | Synonyms: conservationist |
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| enzymologist | (noun) a person who is trained in or engaged in enzymology | - |
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