noun

fanatic

fanatic, zealot, extremist

He is a religious fanatic.

He is a religious fanatic.

She is a fitness fanatic who exercises daily.

She is a fitness fanatic who exercises daily.

a ((adjective)) fanatic a person with an obsessive interest in (sth.) He is known as a political fanatic.

Synonyms: extremist, zealot; Antonyms: moderate

From Latin 'fanaticus' meaning 'of a temple, divinely inspired, frenzied,' from 'fanum' (temple).

Think of a 'fan' whose enthusiasm has become extreme or excessive.

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