adj. 1 lacking in variety; tedious through sameness. 2 (of a sound or utterance) without variation in tone or pitch. monotonize v.tr. (also -ise). monotonously adv. monotonousness n.
MONOTONOUS
Meaning of MONOTONOUS in English
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012