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  1. Home /
  2. Dictionaries /
  3. English Dictionary /
  4. agent

agent

/ˈeɪdʒənt/
a person or thing that acts on behalf of another

The real estate agent helped us find our dream home.

An agent is someone who represents others in transactions or negotiations.


formal

a person who acts on behalf of another, typically in a professional or official capacity

She works as an insurance agent, helping clients choose policies.

An insurance agent assists customers in selecting insurance plans.

Agents often work in fields like real estate, insurance, or law.

Medicine
technical

a substance that causes a specific effect, often in chemistry or biology

The new cancer drug acts as a powerful anti-tumor agent.

In medicine, an agent is a substance that produces a specific biological effect.

In scientific contexts, 'agent' refers to a chemical or biological substance.

Technology
technical

a software program or system that performs automated tasks

The chatbot is an AI agent designed to handle customer inquiries.

In technology, an agent is a program that performs tasks autonomously.

AI agents are increasingly used in customer service and automation.

Collocations

real estate agenta professional who helps people buy or sell propertysecret agenta spy or undercover operativeactive agenta substance or program that is currently functioning

Synonyms

representativedeputyproxyintermediarymediator

Antonyms

principaldirect partyoriginal party

Related Phrases

double agentphrase
a spy who works for two opposing sides
free agentphrase
a person not bound by a contract, free to choose

Pro Tip

Context Matters

The meaning of 'agent' varies by context—ensure you understand whether it refers to a person, a substance, or a program.

Gold Rule

Professional vs. Technical Use

In professional contexts, 'agent' often refers to a human representative, while in technical fields, it can refer to software or chemicals.

Word Origin

From Latin 'agens', present participle of 'agere' (to do or act).

Usage Notes

The term 'agent' is versatile and can refer to both human representatives and non-human entities that act on behalf of others.

Word Breakdown

ag
to act or do
root
+
-ent
one who
suffix
English Dictionary
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Words of the Year

The most notable words that defined each year. Discover the vocabulary that shaped our world.