adjective (a)

• not developed(adj.all)

  Example:
  Courses in interior design were rare and undeveloped.
  Undeveloped social awareness.
  

  Antonym:
  developed
  

  source: wordnet30
• undeveloped or unused(adj.all)

  Example:
  Vast unexploited (or undeveloped) natural resources.
  Taxes on undeveloped lots are low.
  

  Synonym:
  unexploited
  Antonym:
  exploited
  

  source: wordnet30