American English

Definition of antonym noun from the Oxford Advanced American Dictionary

     

    antonym

     noun
    noun
    NAmE//ˈæntənɪm//
     
    (technology)
     
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  1. 1a word that means the opposite of another word synonym opposite
  2. 2 “Old” has two possible antonyms: “young” and “new.” a dictionary of antonyms compare synonym
See the Oxford Advanced Learner's Dictionary entry: antonym