Definition of idealist noun from the Oxford Advanced Learner's Dictionary

     

    idealist

     noun
    noun
    BrE BrE//aɪˈdiːəlɪst//
     
    ; NAmE NAmE//aɪˈdiːəlɪst//
     
     
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  1. 1a person who believes that a perfect life, situation, etc. can be achieved, even when this is not very likely He's too much of an idealist for this government.
  2. 2(philosophy) a person who believes in the theory of idealism (= the belief that our ideas are the only things that are real and that we can know about)