Meaning of the word "Sad"

Sad
bad; unfortunate
[adjective]
Examples:
• her clothes were in sad shape
experiencing or showing sorrow or unhappiness
[adjective]
Examples:
• feeling sad because his dog had died
• Better by far that you should forget and smile / Than that you should remember and be sad
of things that make you feel sad
[adjective]
Examples:
• 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