zeal·ot
noun/ˈzelət/
/ˈzelət/
(often disapproving)- a person who is extremely enthusiastic about something, especially religion or politics
（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.