sad in WordNet English dictionary

1. bad; unfortunate
   "my finances were in a deplorable state"; "a lamentable decision"; "her clothes were in sad shape"; "a sorry state of affairs"
   deplorable  distressing  lamentable  pitiful  sad  sorry 
   
2. experiencing or showing sorrow or unhappiness
   "feeling sad because his dog had died"; "Better by far that you should forget and smile / Than that you should remember and be sad"- Christina Rossetti
   sad 
   
3. of things that make you feel sad
   "sad news"; "she doesn't like sad movies"; "it was a very sad story"; "When I am dead, my dearest, / Sing no sad songs for me"- Christina Rossetti
   sad