something that is disappointing because it is not as good as you expected it to be synonym disappointment, anticlimax令人失望的事;失望;沮喪 Afterwards there was just a feeling of let-down. 事情過後給人留下的只有一種沮喪的感覺。 The London exhibition was a bit of a let-down. 倫敦展覽會有點令人失望。