tediousness (noun)

1. The author's excessive use of unnecessary details created a feeling of tediousness in the novel.

2. The slow-paced plot and lack of action resulted in a sense of tediousness during the movie.

3. The long, drawn-out conversations and never-ending descriptions of emotions led to a sense of tediousness in the romantic novel.

4. The repetitive scenes and slow-moving storyline made watching the anime a tedious experience.