Bible Dictionaries
Fanaticism

Webster's Dictionary

(n.) Excessive enthusiasm, unreasoning zeal, or wild and extravagant notions, on any subject, especially religion; religious frenzy.

Bibliography Information
Webster, Noah. Entry for 'Fanaticism'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​f/fanaticism.html. 1828.