adjective (a)

• experiencing or marked by or expressing sorrow especially that associated with irreparable loss(adj.all)

  Example:
  Sorrowful widows.
  A sorrowful tale of death and despair.
  Sorrowful news.
  Even in laughter the heart is sorrowful.
  

  Antonym:
  joyful
  

  source: wordnet30
• Full of sorrow; exhibiting sorrow; sad; dejected; distressed.(adjective)

  source: webster1913