Synonyms: monotony, sameness, humdrum
Definition: the quality of wearisome constancy, routine, and lack of variety
Usage: he had never grown accustomed to the monotony of his work; he was sick of the humdrum of his fellow prisoners; he hated the sameness of the food the college served
Similar words: unvariedness
Definition: characterized by an absence of variation
Synonyms: sameness
Definition: the quality of being alike
Usage: sameness of purpose kept them together
Similar words: quality
Definition: an essential and distinguishing attribute of something or someone
Usage: the quality of mercy is not strained--Shakespeare