Synonyms of monomaniac

1 Syllable
fiend
2 Syllables
sexist, diehard, stickler, bigot, maniac, zealot, racist
3 Syllables
enthusiast, puritan, fanatic, partisan, sectarian, extremist, dogmatist, chauvinist
4 Syllables
superpatriot, doctrinaire, persecutor
5 Syllables
segregationist