単調

(1)lacking variety

(2)変化の欠乏

(3)tediously repetitious or lacking in variety; "a humdrum existence; all work and no play"; "nothing is so monotonous as the sea"

(4)退屈に繰り返し、多様性に欠ける

(5)sounded or spoken in a tone unvarying in pitch; "the owl's faint monotonous hooting"

(6)ピッチが変わらないトーンで鳴らされるか、話される

(7)lacking contrast or shading between tones

(8)色調間の対比または陰影が欠けているさま