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diabolical

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The definition of diabolical is something devilish or cunning in an evil way.

(adjective)

A devilish and cunning plan to take over the world is an example of a diabolical plan.

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See diabolical in American Heritage Dictionary 4

adjective

Of, concerning, or characteristic of the devil; satanic.
Appropriate to a devil, especially in degree of wickedness or cruelty.

Origin:

Origin: From Middle English deabolik

Origin: , from Old French diabolique

Origin: , from Late Latin diabolicus

Origin: , from Latin diabolus, devil; see Devil

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Related Forms:

diˌa·bolˈi·cal·ly adverb

diˌa·bolˈi·cal·ness noun

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