N-COUNT
令人失望的人（或事物）
Something or someone that is a disappointment is not as good as you had hoped.
例句
For many, their long-awaited homecoming was a bitter disappointment.
对许多人来说，他们期盼已久的还乡之行却令他们大失所望。
...this ne'er-do-well brother who was such a disappointment to his family.
这个令他家人如此失望的没出息的兄弟