doubt - definition in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online (US)

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doubt

noun [C or U] uk   us   /daʊt/
B1 (a feeling of) not being certain about something, especially about how good or true it is: I'm having doubts about his ability to do the job. If there's any doubt about the rocket's engines, we ought to cancel the launch. The prosecution has to establish his guilt beyond reasonable doubt (US beyond a reasonable) doubt. This latest scandal has raised doubts about whether he could win the election. [+ (that)] I never had any doubt (that) you would win. He's the most attractive man in the room, no doubt about that/it.no doubt C1 used to emphasize that what you are saying is true or likely to happen: We will, no doubt, discuss these issues again at the next meeting. No doubt you'll want to unpack and have a rest before dinner.cast doubt on sth C2 to make something seem uncertain: Witnesses have cast doubt on the suspect's innocence.in doubt B2 If the future or success of someone or something is in doubt, it is unlikely to continue or to be successful: The future of the stadium is in doubt because of a lack of money.without (a) doubt B2 used to emphasize your opinion: She is without (a) doubt the best student I have ever taught.
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doubt

verb [T] uk   us   /daʊt/
B2 to not feel certain or confident about something or to think that something is not probable: I doubt whether/if I can finish the work on time. [+ that] They had begun to doubt that it could be done. He may come back tomorrow with the money, but I very much doubt it. I don't doubt his abilities.doubt sb/doubt sb's word C1 to not trust someone or believe what they say: He's never lied to me before, so I have no reason to doubt his word.
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(Definition of doubt from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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