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

     

    idiomatic

     adjective
    adjective
    BrE BrE//ˌɪdiəˈmætɪk//
     
    ; NAmE NAmE//ˌɪdiəˈmætɪk//
     
    Grammar, Linguistic devices
     
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  1. 1containing expressions that are natural to a native speaker of a language She speaks fluent and idiomatic English. See related entries: Grammar, Linguistic devices
  2. 2containing an idiom an idiomatic expression See related entries: Grammar, Linguistic devices
  3. Word Origin early 18th cent.: from Greek idiōmatikos ‘peculiar, characteristic’, from idiōma ‘private property, peculiar phraseology’, from idiousthai ‘make one's own’, from idios ‘own, private’.
See the Oxford Advanced American Dictionary entry: idiomatic