disappointing
adj. 令人失望的，令人扫兴的
v. （使）失望（disappoint 的现在分词形式）
例句
Progress has been particularly disappointing.
进展一直格外令人失望。
《柯林斯英汉双解大词典》
The conclusion of the book was disappointing.
这部书的结尾令人失望。
《牛津词典》
In summary , this was a disappointing performance.
总的来说，这场演出令人失望。
