SAT GRE TOEFL heinous Definition Grossly wicked and morally offensive. Example "The court called the crime a heinous act of violence." Sign in to save SAT PDF — $25 GRE PDF — $25 TOEFL PDF — $25 ← heighten heir → Study tips featuring "heinous" TOEFL Academic Vocabulary: Study by Topic How Context Clues Save You on the SAT 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