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Webster 1913 Edition

(? or ?)

rop.

Adj.

Pertaining to, or resembling, the devil

Mephistopheles

, “a crafty, scoffing, relentless fiend;” devilish in character or aspect; crafty; showing cunning or ingenuity or wickedness;

as, a

mephistophelean

glint in his eye

Syn. – devilish, diabolic, diabolical, mephistophelean.

Mephistophelian ‎(comparative more Mephistophelian, superlative most Mephistophelian)