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agent (EN)
noun

noun “agent”

singular agent, plural agents
  1. a person who acts for or represents another person or organization
    She signed the contract through her authorized agent.
  2. a person who finds work opportunities for actors, musicians, writers, or other professionals
    His agent arranged a meeting with a top publisher.
  3. a person who works for a government intelligence or security service
    The movie is about a secret agent trying to stop a terrorist plot.
  4. a substance that causes a chemical or physical effect
    Bleach is a strong cleaning agent that removes stains.
  5. (in grammar) the person or thing that performs the action of a verb
    In “The wind broke the window,” the wind is the agent.
  6. (in computing) a software program that performs tasks automatically on behalf of a user or other program
    The email agent filters spam messages before they reach the inbox.