English
Mephistophelean
From Mephistopheles + -ean.
A compound of Mephistopheles + -ean
Hebrew אֵל ‘god, deity’
English Mephistopheles
Today it means
adj Showing the cunning or ingenuity or wickedness typical of a devil.
Language periods are conventional ranges, not dates for this word.
Etymograph / Mephistophelean