demonic vs diabolic

demonic and diabolic both are adjectives.

Word	Noun	Adjective	Verb	Adverb
demonic	No	Yes	No	No
diabolic	No	Yes	No	No

As adjectives, demonic and diabolic are synonyms defined as:

demonic and diabolic: extremely evil or cruel; expressive of cruelty or befitting hell

Other synonyms of demonic include diabolical, fiendish, hellish, infernal, satanic, unholy.

demonic (adjective)	diabolic (adjective)
extremely evil or cruel; expressive of cruelty or befitting hell	extremely evil or cruel; expressive of cruelty or befitting hell
	showing the cunning or ingenuity or wickedness typical of a devil