I use the word "unrhythmical" merely to designate such prose where the rhythm is not marked.
"The Literature of Ecstasy"
Albert Mordell
There is no sharp dividing line between rhythmical and unrhythmical prose.
"The Literature of Ecstasy"
Albert Mordell
You have rhythmical and unrhythmical lines, regular and irregular arrangements of accents, all thrown together.
"The Literature of Ecstasy"
Albert Mordell