Synonyms of fanatic in English:

fanatic


See definition of fanatic

noun

1‘a religious fanatic’

SYNONYMS
zealot, extremist, militant, dogmatist, devotee, sectarian, bigot, chauvinist, partisan, radical, diehard, ultra, activist, apologist, adherent
visionary
informal maniac, crank, freak
US informal wackadoo, wackadoodle
ANTONYMS

moderate

2‘a keep-fit fanatic’

SYNONYMS
enthusiast, fan, devotee, lover, addict
informal nut, maniac, fiend, freak, junkie, bug, crank, buff, -head, a great one for
North American informal geek, jock