She idiomatizes her speech with clever phrases.

She idiomatized the foreign phrase to make it sound more natural in English.

She is idiomatizing the phrase to make it more natural.

She idiomatized the situation with a clever remark.

He used a non-idiomatic phrase in his speech.

He used an idiomatick expression in his speech.

She is idiomaticizing her speech to better connect with the audience.

She idiomaticizes her speech to fit in with the locals.

He idiomaticized the phrase to make it more natural.

She tried to idiomaticize the foreign phrase by using a similar expression in English.