fiend
/fiːnd/noun
1- an evil spirit or demon魔鬼, 恶魔。
1.1
the fiend
archaic the Devil〈古〉魔王, 撒旦。
1.2
- a very wicked or cruel person邪恶（或残暴）的人：
a fiend thirsty for blood and revenge.
嗜血成性、复仇心切的恶人。
1.3
- a person causing mischief or annoyance讨厌鬼, 捣蛋鬼, 淘气鬼：
you little fiend !
你这个小讨厌鬼！
1.4
- informal a person who is extremely keen on or addicted to something〈非正式〉…迷; 嗜好成癖的人：
the restaurant's owner is a wine fiend.
那个饭馆的老板是个酒鬼。
派生词
fiendlike
adjective词源
Old English fēond 'an enemy, the devil, a demon', of Germanic origin; related to Dutch vijand and German Feind 'enemy'.