1. An ending or conclusion that is disappointing, dull, or lacks excitement and impact
The movie had great potential but ended with a flat finale that left audiences underwhelmed.
O filme tinha grande potencial, mas terminou com um final decepcionante que deixou o público desapontado.
2. A performance, event, or narrative that concludes without the expected dramatic effect or emotional resonance
Critics were disappointed by the flat finale of the concert series.
Os críticos ficaram desapontados com o final sem graça da série de concertos.