The Collaborative International Dictionary
Prose \Prose\, v. t. [imp. & p. p. Prosed; p. pr. & vb. n. Prosing.]
To write in prose.
To write or repeat in a dull, tedious, or prosy way.
Prosing \Pros"ing\, n.
Writing prose; speaking or writing in a tedious or prosy
manner.
--Sir W. Scott.
Wiktionary
a. Writing prose; speaking or writing in a tedious or prosy manner. n. Tedious talk or writing.
Usage examples of "prosing".
While Stephen and Hanson were prosing away in French and Latin according to the curious English pronunciation, Jack made a rough draft of his promised letter.
Jack went on prosing away about the advantages of surprise, almost certainly superior gunnery and attention to duty until at last they heard the gentle glancing impact of the packet against the fender, the usual shrieks and cries of those throwing and catching ropes, and Jacob appeared.
I am a dull, prosing scholar entirely lacking in the sort of lightness of spirit that would inspire me to any levity.