Definition of necessary adjective from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈnesəsəri//
    ; NAmE NAmE//ˈnesəseri//
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  1. 1  necessary (for somebody/something) (to do something) that is needed for a purpose or a reason synonym essential It may be necessary to buy a new one. It doesn't seem necessary for us to meet. Only use your car when absolutely necessary. If necessary, you can contact me at home. I'll make the necessary arrangements. Changes can easily be made where necessary. She has the qualities necessary to be a successful teacher.
  2. 2  [only before noun] that must exist or happen and cannot be avoided synonym inevitable This is a necessary consequence of progress.
  3. Word Originlate Middle English: from Latin necessarius, from necesse ‘be needful’.Extra examples I was determined not to stay in hospital for any longer than was strictly necessary. Make any alterations you consider necessary. The cold weather has made it necessary to protect the crops. These measures will be enforced, if necessary, by the army. We are here to give help and support when necessary. You may find it necessary to readjust the wheels from time to time. qualifications which are necessary for work with the under-fives A necessary condition for a steep fall in demand is a widespread collapse in confidence. Changes can easily be made where necessary. I’ll make the necessary arrangements. If necessary, you can contact me at home. It doesn’t seem necessary for us to meet. She has the necessary qualities to be a successful teacher.Idioms a thing that is bad or that you do not like but which you must accept for a particular reason The loss of jobs is regarded as a necessary evil in the fight against inflation.
See the Oxford Advanced American Dictionary entry: necessary

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