Prosaic (adjective)

1. Dull, lacking in imagination, or lacking in literary or artistic interest.
2. Commonplace, lacking in excitement or interest.
3. Written in prose, as opposed to poetry.

Origin:

From latin prosaicus, from prosa "prose", from prosa "straightforward".

Examples:

1. The novel was criticized for its prosaic writing and lack of imagination.
2. The lecture was prosaic, it was difficult to stay awake.
3. The story was prosaic, it lacked the excitement of adventure.
4. The work was prosaic, it lacked any artistic merit.
5. His style of writing was prosaic, it was lacking in poetic elements.