An example of sad is how a child looks when his parent goes away.
An example of sad is how you would describe the behavior of a man who treats his wife badly.
A sad face.
A sad movie; sad news.
A sad state of affairs; a sad excuse.
A sad cake.
Ripe and sad courage.
Which treaty was wisely handled by sad and discrete counsel of both parties.
I can't believe you use drugs; you're so sad!
Chalky lands are naturally cold and sad.