| agent | | |
| n. (object) | 1. agent | an active and efficient cause; capable of producing a certain effect.; "their research uncovered new disease agents" |
| ~ causal agency, causal agent, cause | any entity that produces an effect or is responsible for events or results. |
| ~ pressor, vasoconstrictive, vasoconstrictor | any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure. |
| ~ biological agent, biohazard | any bacterium or virus or toxin that could be used in biological warfare. |
| ~ eliminator | an agent that eliminates something. |
| ~ impairer | an agent that impairs.; "crops can be great impairers of the soil" |
| ~ infectious agent, infective agent | an agent capable of producing infection. |
| ~ lethal agent | an agent capable of causing death. |
| ~ motor | a nonspecific agent that imparts motion.; "happiness is the aim of all men and the motor of all action" |
| ~ mutagen | any agent (physical or environmental) that can induce a genetic mutation or can increase the rate of mutation. |
| ~ enlivener, invigorator, quickener | an agent that gives or restores life or vigor.; "the soul is the quickener of the body" |
| ~ relaxer | any agent that produces relaxation.; "music is a good relaxer" |
| ~ represser, repressor | an agent that represses. |
| ~ retardant, retardent, retardation | any agent that retards or delays or hinders.; "flame-retardant" |
| ~ satisfier | any agent capable of producing satisfaction. |
| ~ shortener | any agent that shortens.; "alcohol is a great shortener of life" |
| ~ stressor | any agent that causes stress to an organism. |
| ~ teratogen | any agent that interferes with normal embryonic development: alcohol or thalidomide or X-rays or rubella are examples. |
| ~ transmitter, vector | any agent (person or animal or microorganism) that carries and transmits a disease.; "mosquitos are vectors of malaria and yellow fever"; "fleas are vectors of the plague"; "aphids are transmitters of plant diseases"; "when medical scientists talk about vectors they are usually talking about insects" |
| ~ weakener | that which weakens or causes a loss of strength.; "doubt is a great weakener of resolve" |
| n. (person) | 2. agent | a representative who acts on behalf of other persons or organizations. |
| ~ business agent | an agent who handles business affairs for another; especially one who deals with employers. |
| ~ literary agent | an agent who represents an author in dealings with publishers. |
| ~ bailee | the agent to whom property involved in a bailment is delivered. |
| ~ booker, booking agent | someone who engages a person or company for performances. |
| ~ surrogate, deputy | a person appointed to represent or act on behalf of others. |
| ~ employment agent | someone who runs an employment agency. |
| ~ freight agent | an employee of a freight carrier who directs the receipt and delivery of goods. |
| ~ government agent | a representative or official of a government or administrative department of a government. |
| ~ handler | an agent who handles something or someone.; "the senator's campaign handlers" |
| ~ mill agent | the responsible official at a mill that is under absentee ownership. |
| ~ next friend | (law) a person who acts on behalf of an infant or disabled person. |
| ~ parliamentary agent | a person who is employed to look after the affairs of businesses that are affected by legislation of the British Parliament. |
| ~ placeholder, procurator, proxy | a person authorized to act for another. |
| ~ purchasing agent | an agent who purchases goods or services for another. |
| ~ representative | a person who represents others. |
| ~ intelligence agent, intelligence officer, operative, secret agent | a person secretly employed in espionage for a government. |
| ~ shipping agent | the agent of a shipowner. |
| ~ shopper | a commercial agent who shops at the competitor's store in order to compare their prices and merchandise with those of the store that employs her. |
| ~ special agent | someone whose authority is limited to the special undertaking they have been instructed to perform. |
| ~ talent agent | an agent who represents performers. |
| ~ general agent, universal agent | someone authorized to transact every kind of business for the principal. |
| n. (substance) | 3. agent | a substance that exerts some force or effect. |
| ~ causal agency, causal agent, cause | any entity that produces an effect or is responsible for events or results. |
| ~ substance | a particular kind or species of matter with uniform properties.; "shigella is one of the most toxic substances known to man" |
| ~ antiflatulent | any agent that reduces intestinal gas. |
| ~ antifungal, antifungal agent, antimycotic, antimycotic agent, fungicide | any agent that destroys or prevents the growth of fungi. |
| ~ antimicrobial, antimicrobic, disinfectant, germicide | an agent (as heat or radiation or a chemical) that destroys microorganisms that might carry disease. |
| ~ drug | a substance that is used as a medicine or narcotic. |
| ~ vermicide | an agent that kills worms (especially those in the intestines). |
| ~ alkaliser, alkalizer, antacid, antiacid, gastric antacid | an agent that counteracts or neutralizes acidity (especially in the stomach). |
| ~ bacteriostat | a chemical or biological material that inhibits bacterial growth. |
| ~ blanching agent, bleaching agent, whitener, bleach | an agent that makes things white or colorless. |
| ~ chemical agent | an agent that produces chemical reactions. |
| ~ coagulant, coagulator | an agent that produces coagulation. |
| ~ coolant | a fluid agent (gas or liquid) that produces cooling; especially one used to cool a system by transferring heat away from one part to another.; "he added more coolant to the car's radiator"; "the atomic reactor used a gas coolant"; "lathe operators use an emulsion of oil and water as a coolant for the cutting tool" |
| ~ diluent, dilutant, thinner | a diluting agent. |
| ~ emmenagogue | any agent that promotes menstrual discharge. |
| ~ galactagogue | agent that induces milk secretion. |
| ~ hypnagogue | an agent that induces drowsiness or sleep. |
| ~ hypoglycaemic agent, hypoglycemic agent | any of various agents that decrease the level of glucose in the blood and are used in the treatment of diabetes mellitus. |
| ~ inducer | an agent capable of activating specific genes. |
| ~ lactifuge | any agent that reduces milk secretion (as given to a woman who is not breast feeding). |
| ~ lactogen | any agent that enhances milk production. |
| ~ mitogen | an agent that triggers mitosis. |
| ~ nerve agent, nerve gas | a toxic gas that is inhaled or absorbed through the skin and has harmful effects on the nervous and respiratory system. |
| ~ precipitant | an agent that causes a precipitate to form. |
| ~ solvating agent | an agent that converts something into a solvate. |
| ~ viricide, virucide | an agent (physical or chemical) that inactivates or destroys viruses. |
| n. (person) | 4. agent, broker, factor | a businessman who buys or sells for another in exchange for a commission. |
| ~ brokerage, brokerage firm, securities firm | a stock broker's business; charges a fee to act as intermediary between buyer and seller. |
| ~ auctioneer | an agent who conducts an auction. |
| ~ bourgeois, businessperson | a capitalist who engages in industrial commercial enterprise. |
| ~ insurance agent, insurance broker, general agent, underwriter | an agent who sells insurance. |
| ~ investment banker, underwriter | a banker who deals chiefly in underwriting new securities. |
| ~ estate agent, house agent, land agent, real estate agent, real estate broker | a person who is authorized to act as an agent for the sale of land.; "in England they call a real estate agent a land agent" |
| ~ ship broker | an agent for the ship owner; obtains cargo and may arrange for its loading or discharge. |
| ~ stockbroker | an agent in the buying and selling of stocks and bonds. |
| ~ syndic | one appointed to represent a city or university or corporation in business transactions. |
| ~ travel agent | someone who sells or arranges trips or tours for customers. |
| n. (person) | 5. agent, federal agent | any agent or representative of a federal agency or bureau. |
| ~ indian agent | a representative of the federal government to American Indian tribes (especially on Indian reservations). |
| ~ functionary, official | a worker who holds or is invested with an office. |
| ~ fed, federal official, federal | any federal law-enforcement officer. |
| ~ trustbuster | a federal agent who engages in trust busting. |
| n. (communication) | 6. agent, agentive role | the semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause. |
| ~ participant role, semantic role | (linguistics) the underlying relation that a constituent has with the main verb in a clause. |
| broker | | |
| v. (possession) | 1. broker | act as a broker. |
| ~ commerce, commercialism, mercantilism | transactions (sales and purchases) having the objective of supplying commodities (goods and services). |
| ~ negotiate, talk terms, negociate | discuss the terms of an arrangement.; "They negotiated the sale of the house" |
| marketer | | |
| n. (person) | 1. marketer, seller, trafficker, vender, vendor | someone who promotes or exchanges goods or services for money. |
| ~ booking clerk, ticket agent | someone who sells tickets (e.g., theater seats or travel accommodations). |
| ~ cosmetician | someone who sells or applies cosmetics. |
| ~ flower girl | a woman who sells flowers in the street. |
| ~ fruiterer | a person who sells fruit. |
| ~ cheap-jack, huckster | a seller of shoddy goods. |
| ~ merchandiser, merchant | a businessperson engaged in retail trade. |
| ~ hawker, packman, peddler, pedlar, pitchman | someone who travels about selling his wares (as on the streets or at carnivals). |
| ~ selling agent | someone who sells goods (on commission) for others. |
| ~ dealer | a seller of illicit goods.; "a dealer in stolen goods" |
| ~ underseller | a seller that sells at a lower price than others do.; "he went all over town looking for undersellers" |
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