Disappointing means not meeting someone's expectations or hopes. It can also mean being boring or uninteresting.
When people say something is disappointing, they usually mean that it didn't live up to what they were looking for. This can happen with movies, books, restaurants, and even people you meet. For example, if you go see a movie that has great reviews but turns out to be slow-paced and boring, you might call it a disappointment. The same goes for a friend who doesn't turn out to be as cool or fun as you thought they'd be. Disappointment is also often used in sports and competitions - like when your favorite team loses the game because of a poor performance. In all these cases, people are saying that things didn't go as planned or meet their expectations.
Causing disappointment.
Example: disappointing results / news; a disappointing experience
