adjective satellite (s)

• outside the regular academic curriculum(adj.all)

  Example:
  Sports and drama are popular extracurricular activities.
  

  source: wordnet30
• outside the regular duties of your job or profession(adj.all)

  source: wordnet30
• characterized by adultery(adj.all)

  Example:
  The extracurricular activities of a philandering husband.
  

  Synonym:
  adulterous, extramarital
  

  source: wordnet30