doubt的过去式是：doubted。doubt的详尽释义是n.(名词)怀疑，疑虑，疑惑，不相信，可疑，疑点，疑团，疑云疑问不确实，不确定，不肯定， 拿不准疑惧犹豫迷惘无疑，确实。doubt的例句是用作名词(n.)There is no doubt that we will be successful.毫无疑问我们会成功的。
一、详尽释义点此查看doubt的详细内容
二、双解释义
三、词典解释
1.怀疑;疑虑
If you havedoubt ordoubts about something, you feel uncertain about it and do not know whether it is true or possible. If you say you haveno doubt about it, you mean that you are certain it is true.
doubt
e.g. This raises doubts about the point of advertising...
这对做广告的意义提出了疑问。
e.g. I had my doubts when she started, but she's getting really good...
她刚开始做时我心存疑虑，但她真的做得很好。
2.不能肯定;认为…未必可能
If youdoubt whether something is true or possible, you believe that it is probably not true or possible.
e.g. Others doubted whether that would happen...
其他人认为那未必会发生。
e.g. He doubted if he would learn anything new from Marie...
他认为他不太可能从玛丽那儿学到任何新东西。
3.怀疑（某事物的真实性）
If youdoubt something, you believe that it might not be true or genuine.
e.g. No one doubted his ability...
没有人怀疑他的能力。
e.g. Nobody that I spoke to doubted his sincerity as a politician.
和我谈过话的人中没有一个怀疑他作为一个政治家的诚意。
4.怀疑，不相信（某人或某人的话）
If youdoubt someone ordoubt their word, you think that they may not be telling the truth.
e.g. No one directly involved with the case doubted him...
与此案直接相关的人中没有人怀疑他。
e.g. I still have no reason todoubt his word.
我还是没有理由怀疑他的话。
5.无疑地;确实地
You say that something isbeyond doubt orbeyond reasonable doubt when you are certain that it is true and it cannot be contradicted or disproved.
e.g. A referendum showed beyonddoubt that voters wanted independence...
全民公决无疑显示选民支持独立。
e.g. His ability is beyond anydoubt.
他的能力毋庸置疑。
6.不能肯定的;拿不准的
If you arein doubt about something, you feel unsure or uncertain about it.
doubt的翻译
e.g. He is in nodoubt as to what is needed...
他很确定需要什么。
e.g. When indoubt, call the doctor.
如有疑问，请联系医生。
7.我怀疑;我认为不可能
You sayI doubt it as a response to a question or statement about something that you think is untrue or unlikely.
doubt的意思
e.g. 'Somebody would have seen her.' — 'Idoubt it, not on Monday.'
“可能有人见过她。”——“我认为不可能，不可能在星期一。”
8.可疑的;不确定的;不可靠的
If you say that something isin doubt oropen to doubt, you consider it to be uncertain or unreliable.
doubt
e.g. The outcome was still indoubt...
结果仍不确定。
e.g. That claim is increasingly open todoubt.
那一说法越来越可疑。
9.无疑地;必定
You useno doubt to emphasize that something seems certain or very likely to you.
e.g. The contract for this will nodoubt be widely advertised...
关于这个的合约无疑会受到广泛宣传。
e.g. She's a very sweet woman, as you nodoubt know by now.
她是一个非常温柔的女人，你现在肯定知道了。
10.固然;诚然
You useno doubt to indicate that you accept the truth of a particular point, but that you do not consider it is important or contradicts the rest of what you are saying.
e.g. Nodoubt I'm biased, but it was the most cruel, evil human face I ever set eyes on...
我固然是有偏见的，但那是我所见到的最残忍、最邪恶的人。
e.g. Nodoubt many will regard these as harsh words, but regrettably they are true.
固然会有很多人认为这些话过于刻薄，但是遗憾的是这些都是真话。
11.无疑地;确实地
If you say that something is truewithout doubt orwithout a doubt, you are emphasizing that it is definitely true.
e.g. Withoutdoubt this was the most important relationship I developed at college...
这无疑是我在大学时期建立的最重要的关系了。
e.g. The refugees, without adoubt, are the most vulnerable.
难民无疑是最易受到伤害的。
12. the benefit of thedoubt -> see benefit
a shadow of adoubt -> see shadow
四、例句
There is no doubt that we will be successful.
毫无疑问我们会成功的。
Although a very religious man, he is still troubled by occasional doubts.
他虽然笃信宗教，但有时仍感到迷惘。
The outcome of this discussion is still in doubt.
这次讨论的结果还未定。
She's been feeling ill these days, so I doubt that she'll feel up to going to the country this weekend.
她最近一直都不舒服,所以我怀疑周末她是否能到乡下去。
She was very angry with you, because you seemed to doubt what she had said.
她对你很生气,因为你似乎不相信她说的话,因为你似乎不相信她说的。
She said that I was getting into the habit of doubting.
她说我渐渐地好像对什么都不确定。
五、词汇搭配
六、经典引文
There can be no doubt of that: everybody knows it.
出自：G. B. ShawHe had little doubt..of his power to get hold of the girl.
出自：J. ConradThe Committee..casts doubt on the value of the Ryder report.
出自：M. EdwardesO thou of little faith, wherefore didst thou doubt?
出自：Bible (AV): Matthew七、词语用法
doubt的相关近义词
mistrust、question、suspect、disbelief、hesitancy、indecision、misgiving、uncertainty
doubt的相关反义词
believe、trust、belief、confidence、reliance、trust
doubt的相关临近词
doubtful、doubly、doubter、doubt of、doubt if、doubting、doubtable、doubt arise、doubt about、Doubte skin、Doubt Point、doubt appear