Correctness or purity of diction or language. Formerly also: †an instance of this; a property or special characteristic of a language; an idiom (obs…

The specific character or individuality of a language; the manner of expression considered natural to or distinctive of a language; a language's…

= idiom, n. 1. Obsolete.

Idiomatic quality, idiomaticity.

Idiomatic quality or style.

The mode of expression considered most natural or instinctive in a language. Now rare.

The quality or state of being idiomatic.