Disappointed Unhappy Hoped Expected Happen Good Replied Letter

Unhappy because something that you hoped for or expected did not happen or because someone or something was not as good as you expected.

She was disappointed that he never replied to her letter.

Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.

If you expect nothing from somebody, you are never disappointed.