idiomaticness
/ˌɪdiəˈmætɪknəs/
noun
- The quality or state of being idiomatic; the use of natural, native-like expressions.
- Teachers often assess the idiomaticness of a student's writing.
- The idiomaticness of her speech made her sound like a native speaker.
- The translation lost some of its idiomaticness because it was too literal.