disappointing       
adjective uk/ˌdɪs.əˈpɔɪn.tɪŋ/ us/ˌdɪs.əˈpɔɪn.t̬ɪŋ/
B1 令人失望的,让人沮丧的
making you feel disappointed
  What a disappointing result! 这个结果太让人失望了! 
 The response to our advertisement has been somewhat disappointing. 人们对我们这个广告的反应有些令人失望。 
 - More examples
 - Tiger Woods is determined to erase the memory of a disappointing Cup debut two years ago.
 - The company blamed its disappointing performance on a misguided business plan.
 - We were expecting to win, so a draw was a disappointing result for us.
 - Her disappointing exam results are entirely due to her inattention in class.
 - Responses to our advertisement have been disappointing.