SAT GRE TOEFL monotonous Definition Dull, repetitious, and lacking in variety. Example "The monotonous hum of the engine made it hard to stay awake." Sign in to save SAT Quiz → GRE Quiz → TOEFL Quiz → ← monopoly monotony → Study tips featuring "monotonous" Let the Argument Reveal Unfamiliar Word Meanings Group Words Together by Emotional Tone Map Each Word Into a Connected Network Related words SAT antonym SAT abase SAT abdicate SAT abdomen SAT abduction SAT abet SAT abeyance SAT abject SAT abjure SAT ablution SAT abnegate SAT abnormal