monotony
n. uncountablen. the feeling of being bored because something is the same all the time. It describes a situation that lacks variety and is very repetitive.
n. the quality of being monotonous; a state of tedious uniformity or lack of variety. Often used to describe repetitive tasks or environments that fail to provide stimulation.
The long drive across the desert was filled with monotony.
After working the same shift for three months, the monotony of the job started to wear on his patience.
The architect's design was criticized for its lack of aesthetic variety, as the repetitive use of identical windows and doors created a sense of visual monotony that failed to engage the viewer.
From French monotonie, from Late Latin monotonia, from Ancient Greek μονοτονία (monotonía, “sameness of tone, monotony”).