(n) the quality of wearisome constancy, routine, and lack of variety, Syn. humdrum, sameness, Example: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
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
n. 1. The state of being the same; identity; absence of difference; near resemblance; correspondence; similarity; as, a sameness of person, of manner, of sound, of appearance, and the like. “A sameness of the terms.” Bp. Horsley. [ 1913 Webster ]