Definition of outside adjective from the Oxford Advanced American Dictionary



    [only before noun]
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  1. 1of, on, or facing the outer side synonym external The outside walls are damp.
  2. 2not located in the main building; going out of the main building synonym external an outside toilet You have to pay to make outside calls. I can't get an outside line.
  3. 3not included in or connected with your group, organization, country, etc. We plan to use an outside firm of consultants. She has a lot of outside interests (= not connected with her work). They felt cut off from the outside world (= from other people and from other things that were happening).
  4. 4used to say that something is very unlikely They have only an outside chance of winning. 150 is an outside estimate (= it is very likely to be less).
See the Oxford Advanced Learner's Dictionary entry: outside