colloquialism

“Shut up,” the hacker responded, using a Farsi colloquialism.

Now “awfully sorry” is not a western colloquialism, and the girl looked at him attentively.

He must like to figure, to use a colloquialism,18 and his fondness for it must be genuine, almost an absorption.

For instance, the use of "most" for "almost" is distinctly, if not a vulgarism, at least a colloquialism.

Every proverb, every slang phrase and colloquialism, is what one might call a petrified inspiration.

Such a compliment has seldom been paid on so early an attempt at colloquialism in a new language.