Definition of without preposition from the Oxford Advanced American Dictionary

      

    without

     preposition
    preposition
    NAmE//wɪˈðaʊt//
     
    , NAmE//wɪˈθaʊt//
     
    (abbreviation w/o)
     
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  1. 1not having, experiencing, or showing something They had gone two days without food. He found the place without difficulty. She spoke without much enthusiasm.
  2. 2not in the company of someone Don't go without me.
  3. 3not using or taking something Can you see without your glasses? Don't go out without your coat.
  4. 4 not doing the action mentioned without doing something He left without saying goodbye. You can't make an omelet without breaking eggs. Without wanting to criticize, I think you could have done better. (= used before you make a critical comment) without somebody doing something The party was planned without her knowing anything about it.
See the Oxford Advanced Learner's Dictionary entry: without