Definitions

fanaticism

[fuh-nat-uh-sahyz-uhm] / fəˈnæt əˌsaɪz əm /

NOUN

overenthusiasm

Synonyms

STRONGEST

bigotry extremism hatred intolerance zeal zealotry

STRONG

abandonment arbitrariness bias contumacy dedication devotion dogma enthusiasm faction frenzy immoderation infatuation injustice madness monomania obsessiveness obstinacy partiality partisanship passion prejudice rage single-mindedness stubbornness superstition tenacity transport unfairness unruliness violence willfulness

WEAK

incorrigibility unreasonableness

Antonyms

STRONG

apathy calmness dislike doubt fairness impartiality indifference irresolution justice peace peacefulness

WEAK

disinterest unenthusiasm

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A venue in Rotterdam turned itself over to fantasy dress-up and gamer fanaticism on the weekend, with thousands attending TwitchCon Europe.

From Barron's • May 30, 2026

Mamdani's football fanaticism is far from limited to Arsenal though.

From BBC • May 28, 2026

Local fanaticism for this law and tradition cannot be overstated.

From Slate • May 26, 2026

The dedication and fanaticism of Palantir investors may indicate a high element of risk to outsiders, but it has translated into life-changing money for some.

From MarketWatch • Nov. 25, 2025

He would listen somberly, sigh, and repeat that he had no intention of quarreling with Reb Saunders, he respected his position in spite of its fanaticism.

From "The Chosen" by Chaim Potok

Vocabulary lists containing fanaticism

Power Suffix: -ism

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Their Eyes Were Watching God

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

Elie Wiesel's "Hope, Despair and Memory" (1986)

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!