灰心丧气的近义词在英语中可以表达为以下几个单词：

1. Discouraged

-常用搭配：feel discouraged, become discouraged

-例句：After failing the exam, he felt quite discouraged about his future studies.

2. Defeated

-常用搭配：feel defeated, become defeated

-例句：The defeat in the competition left her feeling defeated and lost.

3. Disheartened

-常用搭配：feel disheartened, become disheartened

-例句：The news of his injury disheartened him and made him reconsider his career.

4. Downcast

-常用搭配：feel downcast, become downcast

-例句：He looked downcast as he received the bad news about his project.

这些单词都可以用来形容一个人因为遭遇挫折或失败而感到沮丧、失望和失去信心。在使用时，可以根据具体语境选择合适的单词和搭配。