[mass noun]the feeling of sadness or displeasure caused by the non-fulfilment of one's hopes or expectations 失望,沮丧;扫兴 to her disappointment, there was no chance to talk privately with Luke. 让她失望的是,没有机会和卢克私下谈谈。 ■[count noun]a person, event, or thing that causes such a feeling 令人失望的人(或事) the job proved a disappointment. 这个工作被证实是令人失望的。 I was a big disappointment to her. 我是个很让她失望的人。