fiend
noun
[ fiːnd ]
• an evil spirit or demon.
Similar:
demon,
devil,
evil spirit,
imp,
bogie,
incubus,
succubus,
hellhound,
spook,
cacodemon,
• an enthusiast or devotee of a particular thing.
• "a football fiend"
Similar:
enthusiast,
fanatic,
maniac,
addict,
devotee,
fan,
lover,
follower,
aficionado,
connoisseur,
appreciator,
buff,
freak,
nut,
ham,
sucker,
great one,
Origin:
Old English fēond ‘an enemy, the devil, a demon’, of Germanic origin; related to Dutch vijand and German Feind ‘enemy’.