di·a·bol·i·cal play_w2(“D0192300″) (d

-b
l
-k
l) also di·a·bol·ic (-
k)
adj.
1. Of, concerning, or characteristic of the devil; satanic.
2. Appropriate to a devil, especially in degree of wickedness or cruelty.
[From Middle English deabolik, from Old French diabolique, from Late Latin diabolicus, from Latin diabolus, devil; see devil.]
di
a·bol
i·cal·ly adv.
a·bol
i·cal·ly adv.di
a·bol
i·cal·ness n.
a·bol
i·cal·ness n.hm()
The American Heritage® Dictionary of the English Language, Fourth Edition copyright ©2000 by Houghton Mifflin Company. Updated in 2003. Published by Houghton Mifflin Company. All rights reserved.
diabolical
Adjective
Informal
1. unpleasant or annoying: the weather was diabolical
2. extreme: diabolical cheek
3. same as diabolic
diabolically adv