Dictionary
di•a•bol•ic
Pronunciation: (dī"u-bol'ik), [key]—
adj.
1. having the qualities of a devil; devilish; fiendish; outrageously wicked:
a diabolic plot.
2. pertaining to or actuated by a devil.
Also,di"a•bol'i•cal.Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.