fanatical
adjective
[ fəˈnatɪk(ə)l ]
• filled with excessive and single-minded zeal.
• "fanatical revolutionaries"
Similar:
zealous,
extremist,
extreme,
militant,
dogmatic,
sectarian,
bigoted,
rabid,
maniacal,
radical,
diehard,
activist,
prejudiced,
chauvinistic,
intolerant,
narrow-minded,
single-minded,
partisan,
blinkered,
illiberal,
inflexible,
uncompromising,
swivel-eyed,