SAT GRE TOEFL IELTS mandatory Definition Required by law or rule; compulsory. Example "Wearing a seatbelt is mandatory in most states." Sign in to save SAT Quiz → GRE Quiz → TOEFL Quiz → IELTS Quiz → ← mandate maneuver → Study tips featuring "mandatory" Spot the Vocabulary Trap in Every Question Audit Your Own Writing to Find Gaps Write GRE Words Into Your Own Sentences 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