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

     

    synonymous

     adjective
    adjective
    BrE BrE//ˈnɒnɪməs//
     
    ; NAmE NAmE//ˈnɑːnɪməs//
     
     
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  1. 1(of words or expressions) having the same, or nearly the same, meaning
  2. 2synonymous (with something) so closely connected with something that the two things appear to be the same Wealth is not necessarily synonymous with happiness.
  3. Extra examples The Delson name is synonymous with excellence in audio. Until the late eighteenth century, ‘opera’ was almost synonymous with Italian opera. Few words are truly synonymous.
See the Oxford Advanced American Dictionary entry: synonymous