anticlimactic
adjective /ˌæntiklaɪˈmæktɪk/
/ˌæntiklaɪˈmæktɪk/, /ˌæntaɪklaɪˈmæktɪk/
- used to describe a situation that is disappointing because it happens at the end of something that was much more exciting, or because it is not as exciting as you expected
- Unfortunately, I found the ending of the film somewhat anticlimactic and not what I had hoped.