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

     

    nauseous

     adjective
    adjective
    BrE BrE//ˈnɔːziəs//
     
    , BrE//ˈnɔːsiəs//
     
    ; NAmE NAmE//ˈnɔːʃəs//
     
    Being ill
     
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  1. 1feeling as if you want to vomit She felt dizzy and nauseous. See related entries: Being ill
  2. 2making you feel as if you want to vomit a nauseous smell See related entries: Being ill
  3. Word Origin early 17th cent.: from Latin nauseosus (from nausea ‘seasickness’).
See the Oxford Advanced American Dictionary entry: nauseous