adjective (a)

• devoted to a cause or ideal or purpose(adj.all)

  Example:
  A dedicated dancer.
  Dedicated teachers.
  Dedicated to the proposition that all men are created equal.
  

  Antonym:
  undedicated
  

  source: wordnet30
• solemnly dedicated to or set apart for a high purpose(adj.all)

  Example:
  A chapel dedicated to the dead of World War II.
  

  Synonym:
  consecrate, consecrated
  Antonym:
  desecrated
  

  source: wordnet30