WordprevenirMeaningto preventPart of speechverbPronunciationCourseSpanish (Latin America)LessonUnreal past conditions (si hubiera..., habría...)Usages of prevenirSi hubieran investigado, habrían prevenido la tragedia.If they had investigated, they would have prevented the tragedy.Habríamos prevenido la explosión si no hubiera habido negligencia.We would have prevented the explosion if there hadn't been negligence.