tediously

This adverb describes an experience characterized by extreme boredom, often resulting from a lack of variety or an excessive duration of a task. It carries a strong negative connotation of mental exhaustion and frustration, suggesting that the activity is not merely slow, but actively draining to the spirit.

While similar to "boringly," "tediously" specifically emphasizes the repetitive or laborious nature of the process. It is frequently used in professional or academic contexts to describe bureaucratic tasks, long lectures, or meticulous data entry where the effort required outweighs the interest gained.