idiomaticity

/ˈɪd.i.əʊ.məˈtɪ.si.ti/noun
University
1

The quality of being idiomatic.

2

An instance or category of instances of that quality.

3

The state of a linguistic expression which exists when the expression exhibits semantic-pragmatic divergence, when the semantic value of the expression differs from its pragmatic value; that is to say, idiomaticity exists when the inherent meaning of the words expressed does not match the meaning of the expression as understood by the users: the sayer(s) and hearer(s).

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