[ ˌmɛfɪstə'fi:lɪən , mɪˌfɪstə- , ˌmɛfɪstɒfɪ'li:ən ]
(also Mephistophelean )
■ adjective wicked; fiendish.
Origin
C19: from Mephistopheles , an evil spirit to whom Faust, in the German legend, sold his soul.
MEPHISTOPHELIAN
Meaning of MEPHISTOPHELIAN in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004