General Terms:
* Insipid: This is the most direct and literal term, meaning lacking in flavor, interest, or excitement.
* Bland: Similar to insipid, but emphasizes the lack of flavor or excitement.
* Dull: Suggests a lack of energy or liveliness.
* Uninspired: Indicates a lack of creativity or imagination.
* Mediocre: Means average or ordinary, lacking in quality.
* Uninteresting: Simply describes a lack of engagement for the reader.
More Specific Terms:
* Prosaic: Describes writing that is plain and ordinary, lacking in imagination or literary merit.
* Formulaic: Indicates writing that follows a predictable pattern or structure, often lacking originality.
* Trivial: Suggests writing that is unimportant or insignificant.
* Tedious: Emphasizes the boring or tiresome nature of the writing.
* Clichéd: Indicates the use of overused phrases or ideas, lacking freshness.
* Banal: Describes writing that is commonplace and lacking in originality or thought-provoking content.
Figurative Language:
* Writing that reads like a "sleeping pill": This metaphor conveys the dull and boring nature of the writing.
* Writing that is "flat as a pancake": This metaphor suggests a lack of depth or interest in the writing.
* Writing that is "like watching paint dry": This metaphor emphasizes the boring and tedious nature of the writing.
Ultimately, the best word to use depends on the specific qualities of the writing you are describing.