Fiends, noun plural of fiend. Synonyms in the same form.
Demon
demons, monsters, devils, addicts, fanatics, aficionados, devotees, maniacs, beasts, hounds, brutes, freaks, ogres, ghouls, enthusiasts, fans, savages, buffs, bugs, cacodemons, daimons, zealots
Other
foes, heads, hopheads
All synonyms for fiend →