Synonyms of fiend

1 Syllable
ghouls, ghoul, djinn, troll, imp, beast
2 Syllables
centaur, dybbuk, addict, critter, monster, demons, devils, brute, sadist, bigot, dement, maniac, serpent, hellion, devil, critters, zealot, monsters, satan, goblin, diablo, beastie, demon, goblins, ogre, nixie, centaurs
3 Syllables
frankensteins, incubus, gargoyle, admirers, barbarian, fanatic, admirer, miscreations, votarient, incubi, erinyes, nutcase, werewolf, devilkin, deviling, savage, succubus, frankenstein, miscreation, quadruped, succubi, sectator, disciple, devotee
4 Syllables
superpatriot, monomaniac, werewolves
5 Syllables
degenerate, mephistopheles