idiomatic
adjective
[ ˌɪdɪəˈmatɪk ]
• using, containing, or denoting expressions that are natural to a native speaker.
• "he spoke fluent, idiomatic English"
• appropriate to the style of art or music associated with a particular period, individual, or group.
• "a short Bach piece containing lots of idiomatic motifs"
Origin:
early 18th century: from Greek idiōmatikos ‘peculiar, characteristic’, from idiōma (see idiom).
