D defs.my
Entry 1 sense Webster, 1913

Monotonous

/mə-nŏtʹən-əs/ · Mo·not·o·nous · IPA /məˈnɑtənəs/
01 a. Uttered in one unvarying tone; continued with dull uniformity; characterized by monotony; without change or variety; wearisome.
  1. 1.
    Uttered in one unvarying tone; continued with dull uniformity; characterized by monotony; without change or variety; wearisome.