1. Showing the cunning or ingenuity or wickedness typical of a devil
   "a mephistophelian glint in his eye"
   - devilish, diabolic, diabolical, mephistophelean

See also: evil, Mephistopheles

• unglamourous
• unglazed
• ungodliness
• ungodly
• ungovernable
• ungoverned
• ungraceful
• ungracefully
• ungracefulness
• ungracious
• ungraciously
• ungraciousness
• ungradable opposition
• ungraded
• ungrammatical
• ungrammatically
• ungrasped
• ungrateful
• ungrateful person
• ungratefully
• ungratefulness
• ungratified
• ungratifying
• ungreased
• ungregarious