| connector | (noun) an instrumentality that connects | Synonyms: connecter, connection, connective, connexion |
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| conservator | (noun) the custodian of a collection (as a museum or library) | Synonyms: curator |
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| (noun) someone appointed by a court to assume responsibility for the interests of a minor or incompetent person | - |
| conspirator | (noun) a member of a conspiracy | Synonyms: coconspirator, machinator, plotter |
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| constrictor | (noun) any of various large nonvenomous snakes that kill their prey by crushing it in its coils | - |
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| constructor | (noun) someone who contracts for and supervises construction (as of a building) | Synonyms: builder |
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| contractor | (noun) a bodily organ that contracts | Synonyms: contractile organ |
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| (noun) someone (a person or firm) who contracts to build things | - |
| (noun) (law) a party to a contract | - |
| (noun) the bridge player in contract bridge who wins the bidding and can declare which suit is to be trumps | Synonyms: declarer |
| contributor | (noun) someone who contributes (or promises to contribute) a sum of money | Synonyms: subscriber |
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| (noun) a writer whose work is published in a newspaper or magazine or as part of a book | - |
| convector | (noun) a space heater that transfers heat to the surrounding air by convection | - |
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| convertor | (noun) a device for changing one substance or form or state into another | Synonyms: converter |
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| cooperator | (noun) an associate in an activity or endeavor or sphere of common interest | Synonyms: collaborator, pardner, partner |
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| coordinator | (noun) someone whose task is to see that work goes harmoniously | Synonyms: co-ordinator |
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| counterdemonstrator | (noun) someone who demonstrates in opposition to another demonstration | - |
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| creator | (noun) a person who grows or makes or invents things | - |
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| creditor | (noun) a person to whom money is owed by a debtor; someone to whom an obligation exists | - |
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| cultivator | (noun) a farm implement used to break up the surface of the soil (for aeration and weed control and conservation of moisture) | Synonyms: tiller |
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| (noun) someone concerned with the science or art or business of cultivating the soil | Synonyms: agriculturalist, agriculturist, grower, raiser |
| cunctator | (noun) someone who postpones work (especially out of laziness or habitual carelessness) | Synonyms: postponer, procrastinator |
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| curator | (noun) the custodian of a collection (as a museum or library) | Synonyms: conservator |
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| debitor | (noun) a person who owes a creditor; someone who has the obligation of paying a debt | Synonyms: debtor |
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| debtor | (noun) a person who owes a creditor; someone who has the obligation of paying a debt | Synonyms: debitor |
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| decorator | (noun) someone who decorates | Synonyms: ornamentalist |
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| (noun) a person who specializes in interior decoration | Synonyms: house decorator, interior decorator, room decorator |
| defalcator | (noun) someone who violates a trust by taking (money) for his own use | Synonyms: embezzler, peculator |
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| defecator | (noun) (obsolete) that which cleanses or purifies; especially, an apparatus for removing the feculencies of juices and syrups. | - |
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| (noun) a person who defecates | Synonyms: shitter, voider |
| defector | (noun) a person who abandons their duty (as on a military post) | Synonyms: deserter |
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| defibrillator | (noun) an electronic device that administers an electric shock of preset voltage to the heart through the chest wall in an attempt to restore the normal rhythm of the heart during ventricular fibrillation | - |
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| deflator | (noun) a statistical factor designed to remove the effect of inflation; inflation adjusted variables are in constant dollars | - |
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| deflector | (noun) a device intended to turn aside the flow of something (water or air or smoke etc) | - |
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| defoliator | (noun) an insect that strips the leaves from plants | - |
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| demodulator | (noun) rectifier that extracts modulation from a radio carrier wave | Synonyms: detector |
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| demonstrator | (noun) someone who participates in a public display of group feeling | Synonyms: protester |
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| (noun) someone who demonstrates an article to a prospective buyer | Synonyms: sales demonstrator |
| (noun) a teacher or teacher's assistant who demonstrates the principles that are being taught | - |
| denitrator | (noun) Any device used to remove nitrates or other nitrogen compounds, especially from water. | - |
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| denominator | (noun) the divisor of a fraction | - |
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| depilator | (noun) a cosmetic for temporary removal of undesired hair | Synonyms: depilatory, epilator |
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| depositor | (noun) a person who has deposited money in a bank or similar institution | - |
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| depreciator | (noun) one who disparages or belittles the worth of something | Synonyms: detractor, disparager, knocker |
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| descriptor | (noun) a piece of stored information that is used to identify an item in an information storage and retrieval system | - |
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| (noun) the phonological or orthographic sound or appearance of a word that can be used to describe or identify something | Synonyms: form, signifier, word form |
| detector | (noun) any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner | Synonyms: sensing element, sensor |
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| (noun) electronic equipment that detects the presence of radio signals or radioactivity | - |
| (noun) rectifier that extracts modulation from a radio carrier wave | Synonyms: demodulator |
| detonator | (noun) a mechanical or electrical explosive device or a small amount of explosive; can be used to initiate the reaction of a disrupting explosive | Synonyms: cap, detonating device |
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| detractor | (noun) one who disparages or belittles the worth of something | Synonyms: depreciator, disparager, knocker |
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| dictator | (noun) a ruler who is unconstrained by law | Synonyms: potentate |
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| (noun) a person who behaves in a tyrannical manner | Synonyms: authoritarian |
| (noun) a speaker who dictates to a secretary or a recording machine | - |
| differentiator | (noun) a person who (or that which) differentiates | Synonyms: discriminator |
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| dilator | (noun) a surgical instrument that is used to dilate or distend an opening or an organ | Synonyms: dilater |
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| (noun) a drug that causes dilation | - |
| (noun) a muscle or nerve that dilates or widens a body part | - |
| 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 |
| disambiguator | (noun) (computer science) a natural language processing application that tries to determine the intended meaning of a word or phrase by examining the linguistic context in which it is used | - |
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| discriminator | (noun) a person who (or that which) differentiates | Synonyms: differentiator |
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| disinfector | (noun) an apparatus for applying disinfectants. | - |
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| disseminator | (noun) someone who spreads the news | Synonyms: propagator |
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| dissimulator | (noun) a person who professes beliefs and opinions that he or she does not hold in order to conceal his or her real feelings or motives | Synonyms: dissembler, hypocrite, phoney, phony, pretender |
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| 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 |
| doctor | (noun) children take the roles of physician or patient or nurse and pretend they are at the physician's office | - |
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| (noun) a licensed medical practitioner | Synonyms: doc, Dr., MD, medico, physician |
| (noun) a person who holds Ph.D. degree (or the equivalent) from an academic institution | Synonyms: Dr. |
| (verb) give medical treatment to | - |
| (verb) alter and make impure, as with the intention to deceive | Synonyms: doctor up, sophisticate |
| (verb) restore by replacing a part or putting together what is torn or broken | Synonyms: bushel, fix, furbish up, mend, repair, restore, touch on |
| duplicator | (noun) apparatus that makes copies of typed, written or drawn material | Synonyms: copier |
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| editor | (noun) (computer science) a program designed to perform such editorial functions as rearrangement or modification or deletion of data | Synonyms: editor program |
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| (noun) a person responsible for the editorial aspects of publication; the person who determines the final content of a text (especially of a newspaper or magazine) | Synonyms: editor in chief |
| educator | (noun) someone who educates young people | Synonyms: pedagog, pedagogue |
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| effector | (noun) an organ (a gland or muscle) that becomes active in response to nerve impulses | - |
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| (noun) a nerve fiber that terminates on a muscle or gland and stimulates contraction or secretion | - |
| (noun) one who brings about a result or event; one who accomplishes a purpose | Synonyms: effecter |
| ejaculator | (noun) a speaker who utters a sudden exclamation | - |
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| (noun) a man who ejaculates semen | - |
| ejector | (noun) a mechanism in a firearm that ejects the empty shell case after firing | Synonyms: cartridge ejector |
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| (noun) An injector, ejector, steam ejector, steam injector, eductor-jet pump or thermocompressor is a type of pump. | Synonyms: eductor-jet pump, injector, steam ejector, steam injector, thermocompressor |
| (noun) a person who ousts or supplants someone else | Synonyms: ouster |
| elector | (noun) a citizen who has a legal right to vote | Synonyms: voter |
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| elevator | (noun) lifting device consisting of a platform or cage that is raised and lowered mechanically in a vertical shaft in order to move people from one floor to another in a building | Synonyms: lift |
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| (noun) the airfoil on the tailplane of an aircraft that makes it ascend or descend | - |
| eliminator | (noun) an agent that eliminates something | - |
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| emancipator | (noun) someone who frees others from bondage | Synonyms: manumitter |
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| emptor | (noun) a person who buys | Synonyms: buyer, purchaser, vendee |
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| emulator | (noun) someone who copies the words or behavior of another | Synonyms: ape, aper, copycat, imitator |
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| enteroceptor | (noun) any receptor that responds to stimuli inside the body | Synonyms: interoceptor |
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| enumerator | (noun) someone who collects census data by visiting individual homes | Synonyms: census taker |
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| eoraptor | (noun) a theropod dinosaur of the genus Eoraptor | - |
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| epilator | (noun) a cosmetic for temporary removal of undesired hair | Synonyms: depilator, depilatory |
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| equator | (noun) an imaginary line around the Earth forming the great circle that is equidistant from the north and south poles | - |
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| (noun) a circle dividing a sphere or other surface into two usually equal and symmetrical parts | - |
| equivocator | (noun) a respondent who avoids giving a clear direct answer | Synonyms: hedger, tergiversator |
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| eradicator | (noun) someone who exterminates (especially someone whose occupation is the extermination of troublesome rodents and insects) | Synonyms: exterminator, terminator |
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| escalator | (noun) a stairway whose steps move continuously on a circulating belt | Synonyms: moving staircase, moving stairway |
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| (noun) a clause in a contract that provides for an increase or a decrease in wages or prices or benefits etc. depending on certain conditions (as a change in the cost of living index) | Synonyms: escalator clause |
| estimator | (noun) an expert at calculation (or at operating calculating machines) | Synonyms: calculator, computer, figurer, reckoner |
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| evaluator | (noun) an authority who is able to estimate worth or quality | Synonyms: judge |
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| excavator | (noun) a machine for excavating | Synonyms: digger, power shovel, shovel |
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| (noun) a workman who excavates for foundations of buildings or for quarrying | - |
| excogitator | (noun) a thinker who considers carefully and thoroughly | - |
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| executor | (noun) a person appointed by a testator to carry out the terms of the will | - |
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| exhibitor | (noun) someone who organizes an exhibit for others to see | Synonyms: exhibitioner, shower |
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| expectorator | (noun) a medicine promoting expectoration | Synonyms: expectorant |
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| (noun) a person who spits (ejects saliva or phlegm from the mouth) | Synonyms: spitter |
| expositor | (noun) a person who explains | Synonyms: expounder |
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| expurgator | (noun) a person who edits a text by removing obscene or offensive words or passages | Synonyms: bowdleriser, bowdlerizer |
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| exterminator | (noun) someone who exterminates (especially someone whose occupation is the extermination of troublesome rodents and insects) | Synonyms: eradicator, terminator |
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| exteroceptor | (noun) any receptor that responds to stimuli outside the body | - |
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| extirpator | (noun) a farm implement used to remove weeds. | - |
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| extractor | (noun) an instrument for extracting tight-fitting components | - |
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| (noun) an apparatus that uses centrifugal force to separate particles from a suspension | Synonyms: centrifuge, separator |
| (noun) a mechanism in a firearm that pulls an empty shell case out of the chamber and passes it to the ejector | Synonyms: cartridge extractor, cartridge remover |
| fabricator | (noun) someone who tells lies | Synonyms: fibber, storyteller |
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| facilitator | (noun) someone who makes progress easier | - |
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| factor | (noun) (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity | Synonyms: cistron, gene |
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| (noun) an abstract part of something | Synonyms: component, constituent, element, ingredient |
| (noun) an independent variable in statistics | - |
| (noun) anything that contributes causally to a result | - |
| (noun) a businessman who buys or sells for another in exchange for a commission | Synonyms: agent, broker |
| (noun) one of two or more integers that can be exactly divided into another integer | Synonyms: divisor |
| (noun) any of the numbers (or symbols) that form a product when multiplied together | - |
| (verb) resolve into factors | Synonyms: factor in, factor out |
| (verb) consider as relevant when making a decision | Synonyms: factor in, factor out |
| (verb) be a contributing factor | - |
| fetor | (noun) a distinctive odor that is offensively unpleasant | Synonyms: foetor, malodor, malodour, mephitis, reek, stench, stink |
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| flocculator | (noun) An apparatus used in the process of flocculation. | - |
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| foetor | (noun) a distinctive odor that is offensively unpleasant | Synonyms: fetor, malodor, malodour, mephitis, reek, stench, stink |
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| fornicator | (noun) someone who commits adultery or fornication | Synonyms: adulterer |
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| fryolator | (noun) A kitchen appliance for deep frying; its size depends on intended use. | Synonyms: deep fat fryer, deep fryer, frier, fryer |
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| fumigator | (noun) a device that generates a gas for the purpose of disinfecting or eradicating pests | - |
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| (noun) someone whose job is to fumigate | - |
| gator | (noun) either of two amphibious reptiles related to crocodiles but with shorter broader snouts | Synonyms: alligator |
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| gearmotor | (noun) a motor combined with a set of speed-reducing gears. | - |
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| generator | (noun) engine that converts mechanical energy into electrical energy by electromagnetic induction | - |
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| (noun) an apparatus that produces a vapor or gas | - |
| (noun) an electronic device for producing a signal voltage | - |
| (noun) someone who originates or causes or initiates something | Synonyms: author, source |
| genitor | (noun) a natural father or mother | - |
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| gladiator | (noun) (ancient Rome) a professional combatant or a captive who entertained the public by engaging in mortal combat | - |
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| (noun) a professional boxer | Synonyms: prizefighter |
| grantor | (noun) a person who makes a grant in legal form | - |
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| granulator | (noun) a machine that forms material (such as plastics, bottles, organics, etc.) into granules. | Synonyms: granulator machine |
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| guarantor | (noun) one who provides a warrant or guarantee to another | Synonyms: surety, warranter, warrantor |
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| hector | (verb) be bossy towards | Synonyms: ballyrag, boss around, browbeat, bully, bullyrag, push around, strong-arm |
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