monotony
Definitions
Lack of variety and interest; tedious repetition and routine.
A tiresome uniformity or lack of variation in pitch or tone.
Examples
The endless monotony of the desert landscape eventually became exhausting for the travelers.
She decided to change her daily routine to break the monotony of her office job.
Synonyms
tedium boredom dullness sameness uniformity repetitiveness routine
Antonyms
variety excitement diversity change novelty stimulation variation