The word "prosily" is an adverb that describes doing something in a dull, straightforward, or unexciting way. When someone speaks or writes "prosily," it means they are being very plain and perhaps a bit boring, without much excitement or creativity.
In more advanced writing, "prosily" can be used in a literary context to critique an author's style, suggesting that the text lacks flair or originality.
There aren't specific idioms or phrasal verbs that include "prosily," but you might use phrases like "putting someone to sleep" to convey the same idea of boring speech or writing.
In summary, "prosily" is used to describe a way of speaking or writing that is dull or uninteresting.