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Definition of fanaticism
fanaticism
/fəˈnætɪsɪzəm/
fa · nat · i · cism
Adverb:fanatically
•Plural:fanaticisms
•Adjective:fanatic
fanaticism Lexical Profile
CEFR
C1
Grade
10
Tier
2
Usage
Top 10k
Syllables
5
fanaticism Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
The quality or state of being filled with excessive, single-minded, and often uncritical zeal, particularly for an extreme religious or political cause.
Example
"The historian examined how ideological fanaticism can blind societies to rational compromise and empathy."
Synonyms
View all synonyms for fanaticism Antonyms
View all antonyms for fanaticism• Rhymes for fanaticism
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Word Origin & Etymology
Coined in the mid-17th century from the adjective 'fanatic' and the suffix '-ism'. It ultimately derives from the Latin 'fanaticus', meaning 'insanely but divinely inspired', from 'fanum' (temple).
Cite this Entry
Wordmom. (2026). Definition of Fanaticism. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/fanaticism