Definitions

fanatical

[fuh-nat-i-kuhl] / fəˈnæt ɪ kəl /

ADJECTIVE

overenthusiastic

Synonyms

STRONGEST

bigoted dogmatic enthusiastic fervent frenzied impassioned narrow-minded obsessive passionate rabid single-minded stubborn violent zealous

WEAK

biased bugged burning contumacious credulous devoted domineering erratic extreme feverish fiery headstrong high on immoderate impulsive incorrigible infatuated mad monomaniacal nuts for obsessed obstinate opinionated partial partisan possessed prejudiced radical raving turned on unruly visionary wild willful

Antonyms

STRONGEST

apathetic broad-minded calm cool doubting happy indifferent lethargic tolerant unenthusiastic unexcited

WEAK

disinterested dispassionate impartial

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.

Managers were fanatical about keeping Ford’s ranks away from the project.

From The Wall Street Journal • May 5, 2026

India captain Suryakumar Yadav admitted Friday "there will be nerves" when India open their T20 World Cup campaign in front of more than 30,000 fanatical home supporters in Mumbai, but vowed to give them "entertainment".

From Barron's • Feb. 6, 2026

Superstar players, fanatical fans, regular helpings of drama and the sinister side of the game - the Superclasico has it all.

From BBC • Apr. 27, 2025

Wynona has designs on River’s cat, and River keeps planting a botanical species on workplace grounds that Wynona is on a fanatical mission to wipe out.

From Los Angeles Times • Feb. 7, 2025

At dinner Pearl talked about the Richardsons as if they were a TV show she was fanatical about.

From "Little Fires Everywhere" by Celeste Ng

Vocabulary lists containing fanatical

"To Kill a Mockingbird" by Harper Lee, Chapters 7–11

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The Bean Trees

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"Simon's Saga," Vocabulary from Episode 34

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