zealoushaving or showing great enthusiasm and energy for a cause or objectiveThe zealous reformer campaigned tirelessly to overhaul the outdated education system.NoteThe zealous reformer campaigned tirelessly to overhaul the outdated education system.Elon.io is an online learning platformWe have an entire course teaching GRE Verbal — Essential Vocabulary grammar and vocabulary.Start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