単調さ

(1)a want of animation or brilliance; "the almost self-conscious flatness of Hemingway's style"

(2)活気または輝きの不足

(3)the quality of wearisome constancy, routine, and lack of variety; "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"

(4)退屈なほど不変で変化に乏しい性質

(5)an unchanging intonation

(6)変化のないイントネーション