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Synonyms

agent

American  
[ey-juhnt] / ˈeɪ dʒənt /

noun

  • agents
    plural
  1. a person or business authorized to act on another's behalf.

    Our agent in Hong Kong will ship the merchandise.

    A best-selling author needs a good agent.

    Synonyms:
    deputy, representative
  2. a person or thing that acts or has the power to act.

  3. a natural force or object producing or used for obtaining specific results.

    Many insects are agents of fertilization.

    Synonyms:
    means
  4. an active cause; an efficient cause.

  5. a person who works for or manages an agency.

  6. a person who acts in an official capacity for a government or private agency as a guard, detective, or spy.

    an FBI agent;

    the secret agents of a foreign power.

  7. a person responsible for a particular action.

    Who was the agent of this deed?

  8. Grammar. a form or construction, usually a noun or noun phrase, denoting an animate being that performs or causes the action expressed by the verb, as the police in The car was found by the police.

  9. Indian agent.

  10. a representative of a business firm, especially a traveling salesperson; canvasser; solicitor.

  11. Chemistry. a substance that causes a reaction.

  12. Pharmacology. a drug or chemical capable of eliciting a biological response.

  13. Pathology. any microorganism capable of causing disease.

  14. British. a campaign manager; an election agent.


adjective

  1. acting; exerting power (opposed to patient).

verb (used with object)

  1. to represent (a person or thing) as an agent; act as an agent for: Who agented that deal?

    to agent a manuscript;

    Who agented that deal?

agent British  
/ ˈeɪdʒənt, eɪˈdʒɛnʃəl /

noun

  1. a person who acts on behalf of another person, group, business, government, etc; representative

  2. a person or thing that acts or has the power to act

  3. a phenomenon, substance, or organism that exerts some force or effect

    a chemical agent

  4. the means by which something occurs or is achieved; instrument

    wind is an agent of plant pollination

  5. a person representing a business concern, esp a travelling salesman

  6. short for estate agent

  7. short for secret agent

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

agent Scientific  
/ ājənt /
  1. A substance that can bring about a chemical reaction or a biological effect.

  2. Compare reagent


Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of agent

First recorded in 1570–80; from Latin agent-, stem of agēns “doing,” present participle of agere “to do, drive”

Explanation

When you're buying a house or negotiating your break-out movie contract, it's a good idea to hire an agent to represent you — someone who can keep a cool head and get the best deal for you. The suave 007 may be your dream secret agent, but you could find real ones in the CIA, the FBI, and other government organizations populated with agents. Beware the double agent, the spy you think is working for you when he's really working for your enemy. An inanimate object can also be an agent. A chemical agent, like vinegar mixed with salt, can make copper pennies shine. Chemical weapons contain more sinister agents that wreak havoc on their victims.

Keep Reading on Vocabulary.com

Vocabulary lists containing agent

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

One estate agent said there had been no viewings on the estate for 18 months.

From BBC Aug. 21, 2026

You can adjust those numbers as you need or get specific numbers for your case from an insurance agent or financial adviser who sells insurance products.

From MarketWatch Aug. 19, 2026

His father, an artisanal miner, had proudly helped the 23-year-old prepare for the trip, believing he was going to work as a car import agent in Tanzania.

From Barron's Aug. 19, 2026

The Alaska agent directed me to a lounge closer to my gate.

From The Wall Street Journal Aug. 19, 2026

Every moment an agent sat by the phone.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin

The film, described as “Ocean’s Eleven” meets “Inglourious Basterds,” is based on Operation Fortitude, an effort during World War II in which double agents set a trap for Adolf Hitler and his armies.

From Los Angeles Times Aug. 21, 2026

"I want it to have an affect on the American system," she allegedly told agents.

From BBC Aug. 20, 2026

Why the pulp and paper manufacturer Georgia-Pacific is slow-rolling ad-buying agents.

From The Wall Street Journal Aug. 20, 2026

"There's no helping me, you guys know enough," she is alleged to have told agents.

From Barron's Aug. 20, 2026

Unlike the actual reporters who rushed to the front rows so they’d be able to ask questions, the agents preferred seats near the doorways where they’d have a vantage point to watch for possible threats.

From "City Spies" by James Ponti

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