necessary Definition in Cambridge British English Dictionary
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Definition of "necessary" - British English Dictionary

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necessaryadjective

uk   us   /ˈnes.ə.ser.i/
B1 needed in order to achieve a particular result: He lacks the necessary skills for the job. I don't have much time so I won't be staying any longer than necessary. Just do what's necessary and then leave. If necessary, we can always change the dates of our trip. Is it necessary for all of us to be present at the meeting this afternoon? We don't want to take any more luggage with us than is strictly necessary. used in negatives and questions to show that you disapprove of something and do not think it should be used or done: I don't think that kind of language is necessary in a show that kids could be watching. Was it really necessary for you to say that?
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(Definition of necessary from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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