from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of, concerning, or characteristic of the devil; satanic.
- adj. Appropriate to a devil, especially in degree of wickedness or cruelty.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Extremely wicked or cruel.
- adj. Of or concerning the devil; satanic.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. showing the cunning or ingenuity or wickedness typical of a devil
- adj. extremely evil or cruel; expressive of cruelty or befitting hell
From Middle English deabolik, from Old French diabolique, from Late Latin diabolicus, from Latin diabolus, devil; see devil.(American Heritage® Dictionary of the English Language, Fourth Edition)
First attested between 1350 and 1400 from Middle English diabolik, from Middle French diabolique, from Late Latin diabolicus, from Ancient Greek διαβολ-ικός (diabolikos, "devilish"), from διάβολος (diabolos). (Wiktionary)