同義詞
1. a person who acts on behalf of another, in particular:
- representative
- , negotiator
- , business manager
- , emissary
- , envoy
- , factor
- , go-between
- , proxy
- , surrogate
- , trustee
- , liaison
- , broker
- , delegate
- , spokesperson
- , spokesman
- , spokeswoman
- , frontman
- , mouthpiece
- , rep
2. a person or company that provides a particular service, typically one that involves organizing transactions between two other parties
3. a person who works secretly to obtain information for a government or other official body
- spy
- , secret agent
- , undercover agent
- , operative
- , fifth columnist
- , Mata Hari
- , mole
- , spook
- , snooper
- , G-man
- , intelligencer
- , beagle
- , lurcher
4. a person or thing that takes an active role or produces a specified effect
5. the doer of an action, typically expressed as the subject of an active verb or in a
- doer
- , performer
- , author
- , executor
- , perpetrator
- , operator
- , operative
- , mover
- , producer
- , cause
- , origin
- , root
- , source
- , instrument
- , catalyst
