contravenefrom the root 'contra' (against) + 'venire' (come): to violate or act against a law, treaty, or code of conductThe factory's emissions contravene several federal air quality standards.NoteThe factory's emissions contravene several federal air quality standards.Elon.io is an online learning platformWe have an entire course teaching GRE Verbal — Essential Vocabulary grammar and vocabulary.Start learning GRE Verbal — Essential Vocabulary now