Definition of idiomatic adjective from the Oxford Advanced American Dictionary

     

    idiomatic

     adjective
    adjective
    NAmE//ˌɪdiəˈmæt̮ɪk//
     
     
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  1. 1containing expressions that are natural to a native speaker of a language She speaks fluent and idiomatic English.
  2. 2 containing an idiom an idiomatic expression
idiomatically
 
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NAmE//ˌɪdiəˈmæt̮ɪkli//
 
adverb
See the Oxford Advanced Learner's Dictionary entry: idiomatic