anticlimax
/ˌæn.tiˈklaɪ.mæks/
noun
- A disappointing end to something that was expected to be exciting or impressive.
- After months of buildup, the movie's ending was a total anticlimax.
- The team's victory celebration turned into an anticlimax when the trophy was lost.
- For many, the final episode of the series was an anticlimax compared to the rest of the show.
Synonyms