monotony
noun
[ məˈnɒt(ə)ni ]
• lack of variety and interest; tedious repetition and routine.
• "you can become resigned to the monotony of captivity"
Similar:
tedium,
tediousness,
lack of variety,
dullness,
boredom,
lack of variation,
repetitiveness,
repetitiousness,
repetition,
sameness,
unchangingness,
uniformity,
routine,
routineness,
wearisomeness,
tiresomeness,
humdrumness,
lack of interest,
lack of excitement,
prosaicness,
uneventfulness,
dreariness,
colourlessness,
featurelessness,
deadliness,
sameyness,