a person who is extremely enthusiastic about something, especially religion or politics synonym fanaticTopics War and conflictc2(尤指宗教或政治的)狂热分子,狂热者 Word Originmid 16th cent. (in the sense ‘member of an ancient Jewish sect’): via ecclesiastical Latin from Greek zēlōtēs, from zēloun ‘be jealous’, from zēlos.