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 Quiz → GRE Quiz → TOEFL Quiz → ← heighten heir → Study tips featuring "heinous" 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