AGENT
agent
(noun) an active and efficient cause; capable of producing a certain effect; “their research uncovered new disease agents”
agent, factor, broker
(noun) a businessman who buys or sells for another in exchange for a commission
agent
(noun) a representative who acts on behalf of other persons or organizations
agent, federal agent
(noun) any agent or representative of a federal agency or bureau
agent
(noun) a substance that exerts some force or effect
Source: WordNet® 3.1
Etymology
Noun
agent (plural agents)
One who exerts power, or has the power to act
One who acts for, or in the place of, another (the principal), by authority from him/her; someone entrusted to do the business of another
A person who looks for work for another person
Someone who works for an intelligence agency
An active power or cause or substance; something which has the power to produce an effect
(computing) In the client-server model, the part of the system that performs information preparation and exchange on behalf of a client or server. Especially in the phrase “intelligent agent” it implies some kind of autonomous process which can communicate with other agents to perform some collective task on behalf of one or more humans.
(grammar) The participant of a situation that carries out the action in this situation, e.g. "the boy" in the sentences "The boy kicked the ball" and "The ball was kicked by the boy".
(gambling) A cheat who is assisted by dishonest casino staff.
Synonyms
• (one who exerts power): See also doer
• (one who acts in place of another): See also deputy
• (person who looks for work for another person): manager, representative, rep
• (someone who works for an intelligence agency): See also spy
• (grammar): actor, performer
Antonyms
• (grammar): patient, recipient, undergoer
Anagrams
• Tegan, gantĂ©, genta
Source: Wiktionary
A"gent, a. Etym: [L. agens, agentis, p. pr. of agere to act; akin to
Gr. aka to drive, Skr. aj.
Definition: Actingpatient, or sustaining, action. [Archaic] "The body
agent." Bacon.
A"gent, n.
1. One who exerts power, or has the power to act; an actor.
Heaven made us agents, free to good or ill. Dryden.
2. One who acts for, or in the place of, another, by authority from
him; one intrusted with the business of another; a substitute; a
deputy; a factor.
3. An active power or cause; that which has the power to produce an
effect; as, a physical, chemical, or medicinal agent; as, heat is a
powerful agent.
Source: Webster’s Unabridged Dictionary 1913 Edition