adjective satellite (s)

• highly educated; having extensive information or understanding(adj.all)

  Example:
  A knowledgeable critic.
  A knowledgeable audience.
  

  Synonym:
  knowing, learned, lettered, well-educated, well-read
  

  source: wordnet30
• alert and fully informed(adj.all)

  Example:
  Surprisingly knowledgeable about what was going on.
  

  Synonym:
  knowing
  

  source: wordnet30
• thoroughly acquainted through study or experience(adj.all)

  Example:
  Knowledgeable about the technique of painting.
  

  Synonym:
  intimate, versed
  

  source: wordnet30