disappointing

adjective
UK /ˌdɪsəˈpɔɪntɪŋ/
US /ˌdɪsəˈpɔɪntɪŋ/

Not as good as you hoped it would be.

The movie was disappointing because it was so boring.


OTHER MEANINGS

2. Failing to meet someone's hopes or expectations.

His disappointing test score made him study harder.

3. Causing someone to feel sad because something was not as good as expected.

The team's disappointing loss upset the fans.

4. Not living up to a promise or standard.

The disappointing weather ruined our picnic plans.