Main entry: 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
Main entry: humdrum, monotonous
Definition: tediously repetitious or lacking in variety
Usage: a humdrum existence; all work and no play; nothing is so monotonous as the sea
Main entry: unglamorous, unglamourous, commonplace, prosaic, humdrum
Definition: not challenging; dull and lacking excitement
Usage: an unglamorous job greasing engines