a person who acts on behalf of another person or group.
'대변자'
"in the event of illness, a druable power of attorney enabled her nephew to act as her agent"
- a person who manages business, financial, or contractual matters for an actor, performer writer, etc.
'매니저'
- a person or company that provides a particular service, typically one that involves organizing transactions between two other parties.
'에이전트'
- a person who obtains information for a government or other official body, typicaly in secret.
"a trained intelligence agent"
'요원' '첩자'
- a person or thing that takes an active role or produces a specified effect.
"these teachers view themselves as agents of social change"
'대리자'
-a substance that brings about a chemical or physical effect or causes a chemical reaction.
'화학 물질'
-GRAMMAR
the doer of an action, typically expressed as the subject of an active verb or in a by phrase with a passive verb.
'주체'
a person who acts for or represent another: a travel agent.
I tried to avoid agents that affects negatively to my healthy.
Reference