doubtful

柯林斯词典

1. ADJ If it is doubtful that something will happen, it seems unlikely to happen or you are uncertain whether it will happen. 不大可能的
For a time it seemed doubtful that he would move at all. 短期內他似乎不大可能搬走。
2. ADJ If you are doubtful about something, you feel unsure or uncertain about it. 不能肯定的
I was still very doubtful about the chances for success. 我仍然不能肯定成功的可能性有多大。
3. doubtfullyADV 不能肯定地[ADV after v]
Keeton shook his head doubtfully. 基頓將信將疑地搖了搖頭。
4. ADJ If you say that something is of doubtful quality or value, you mean that it is of low quality or value. 有問題的[表不滿]
...selling something that is overpriced or of doubtful quality. …銷售價格過高或質量有問題的東西。
5. ADJ If a sports player is doubtful for a match or event, he or she seems unlikely to play, usually because of injury. 不太可能的[journalism]
Forsyth is doubtful for tonight's game with a badly bruised leg. 福賽斯因爲嚴重的腿傷不太可能蓡加今晚的比賽。

It is doubtful whether the government will ever agree to their demands .
We were doubtful about the product's usefulness from the start .
It now looks doubtful that the building work will be completed on time .
I'm a bit doubtful about whether to take on the job , as the hours are pretty unsociable .
Many of us are doubtful about the value of these new educational strategies .