idiomatically

/ˌɪdiəˈmætɪkli/
adverb
  1. In a way that uses or relates to idioms; in a manner natural to a native speaker.
    • The essay was written idiomatically, so it felt very natural to read.
    • To sound fluent, you need to learn how to use expressions idiomatically.
    • She speaks English idiomatically, using phrases like "hit the nail on the head."