Fiend - Definition
fiend
n 1: a cruel wicked and inhuman person [syn: monster, fiend,
devil, demon, ogre]
2: an evil supernatural being [syn: devil, fiend, demon,
daemon, daimon]
3: a person motivated by irrational enthusiasm (as for a cause);
"A fanatic is one who can't change his mind and won't change
the subject"--Winston Churchill [syn: fanatic, fiend]