Meaning of AGENT in English

AGENT

■ noun

1》 a person that provides a particular service, typically one organizing transactions between two other parties.

↘a person who manages financial or contractual matters for an actor, performer, or writer.

2》 a person who works in secret to obtain information for a government.

3》 a person or thing that takes an active role or produces a specified effect.

↘ Grammar the doer of an action.

4》 Computing an independently operating Internet program, typically one set up to locate information on a specified subject and deliver it on a regular basis.

Derivatives

~ive adjective ( Grammar ).

Origin

ME: from L. ~- , agere 'to do'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.