fracasso; fiasco; algo que não corresponde às expectativas
1. Something that fails to produce the expected result or impact; an event or action that is disappointing because it is less impressive or exciting than anticipated
The concert was supposed to be spectacular, but it turned out to be a damp squib.
O concerto deveria ser espetacular, mas acabou sendo um fracasso.
2. A firework that fails to ignite properly, producing only a hiss or fizzle instead of exploding
The firework was a damp squib and barely made a sound.
O foguete era um fracasso e quase não fez barulho.