Synonyms of fanaticism in English:

fanaticism


See US English definition of fanaticism

See UK English definition of fanaticism

See Spanish definition of fanatismo

noun

1‘a study of fanaticism during the French Revolution’

SYNONYMS
zealotry, zeal, extremism, militancy, sectarianism, fundamentalism, bigotry, dogmatism, chauvinism, radicalism, immoderation
ANTONYMS

moderation

2‘his love of James Dean verged on fanaticism’

SYNONYMS
obsessiveness, over-enthusiasm, addiction, fixation, madness, monomania, immoderation, passion, infatuation
enthusiasm, dedication, devotion, single-mindedness
informal fandom
rare fervency, ardency, passionateness
ANTONYMS

indifference