1. the quality or state of being monotonous; lack of variety or change; tedious sameness
Usage: abstract noun form of monotonous; commonly used in formal and academic contexts

Examples

• The monotonousness of the daily commute made her job feel unbearable.
• Students complained about the monotonousness of the lecture, which covered the same points repeatedly.
• The monotonousness of the landscape—endless flat fields—made the drive seem longer.
• He struggled with the monotonousness of factory work, performing the same task eight hours a day.
• The monotonousness of the background music eventually faded into white noise.
• Critics noted the monotonousness of the film's plot and predictable dialogue.