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" Spot the Vocabulary Trap in Every Question Write GRE Words Into Your Own Sentences TOEFL Academic Vocabulary: Study by Topic Related words SAT abase SAT abdicate SAT abdomen SAT abduction SAT abet SAT abeyance SAT abject SAT abjure SAT ablution SAT abnegate SAT abnormal SAT abominable