Synonyms of fanatical in English:

fanatical


See definition of fanatical

adjective

1‘they are fanatical about their faith’

SYNONYMS
zealous, extremist, extreme, militant, dogmatic, sectarian, bigoted, rabid, maniacal, radical, diehard, activist
prejudiced, chauvinistic, intolerant, narrow-minded, single-minded, partisan, blinkered, illiberal, inflexible, uncompromising
British informal swivel-eyed
ANTONYMS

moderate, open-minded

2‘the band gained a fanatical following’

SYNONYMS
enthusiastic, eager, keen, fervent, ardent, fervid, passionate, devoted, dedicated
over-enthusiastic, obsessive, obsessed, infatuated, fixated, compulsive, immoderate, frenzied, frenetic
informal wild, gung-ho, nuts, potty, dotty, crazy, hooked
literary passional, perfervid
US informal wackadoo, wackadoodle
ANTONYMS

indifferent