hopeless

形容词 hopeless:

1. without hope because there seems to be no possibility of comfort or success
2. of a person unable to do something skillfully
3. certain to fail
4. (informal to emphasize how bad it is) beyond hope of management or reform

1. Leave me alone. I'm hopeless.
   别打扰我。我已经彻底绝望了。
2. I'm hopeless at mathematics.
   我对数学一窍不通。
3. I'm hopeless.
   我不可救药了。
4. It was completely hopeless. They had to await their doom.
   希望已绝，他们只能坐以待毙了。
5. It's hopeless.
   没有希望了。
6. The doctor said the old man's condition was hopeless.
   医生说这位老人的病是没有希望的了。
7. Her room is in a hopeless muddle.
   她的房间弄得不堪设想地混乱。
8. With a hopeless sigh, he turned away.
   他发出一声绝望的叹息，转身走开了。

hope.less

adj.（形容词）
Having no hope; despairing.See Synonyms at despondent
不抱希望的；绝望的参见 despondent
Offering no hope; bleak.
没有希望的；惨淡的
Incurable.
不可救药的
Having no possibility of solution; impossible.
没有解决的可能性的，不可能的

【引伸】
hope.lessly
adv.（副词）