1. Showing the cunning or ingenuity or wickedness typical of a devil
   "the cold calculation and diabolic art of some statesmen"
   - devilish, diabolical, mephistophelian, mephistophelean 
2. Extremely evil or cruel; expressive of cruelty or befitting hell
   "fires lit up a diabolic scene"
   - demonic, diabolical, fiendish, hellish, infernal, satanic, unholy

See also: devil, evil

Encyclopedia: Diabolic

• Lent lily
• Lente Iletin
• Lente Insulin
• lenten
• lenten rose
• Lententide
• Lentia
• Lentibulariaceae
• lentic
• lenticel
• lenticular
• lenticular nucleus
• lentiform
• lentiform nucleus
• lentiginose
• lentiginous
• lentigo
• lentil
• lentil plant
• lentil soup
• Lentinus
• Lentinus edodes
• Lentinus lepideus
• lentisk
• lentissimo