Topic: LINGUISTICS
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id‧i‧o‧mat‧ic

2SL typical of the natural way in which someone speaks or writes when they are using their own language :
He had the ability to write fluent and idiomatic English.
the idiomatic richness of the Spanish language
He had the ability to write fluent and idiomatic English.
the idiomatic richness of the Spanish language —idiomatically
adverb
adverb