Fiendish (4)
'fiendish' is the definition.
(I know that fiendish can be written as satanic)
This is the entire clue.
(Other definitions for satanic that I've seen before include "Diabolic" , "Hellish" , "Nick's" , "Fiendish" , "Devilish (as Blake's 18)" .)
'fiendish' is the definition.
(I know that fiendish can be written as demonic)
This is all the clue.
(Other definitions for demonic that I've seen before include "Fiendish or satanic" , "As if possessed by devil" , "diabolical" , "Like evil spirits" , "Cruel like the devil" .)
'fiendish' is the definition.
(I know that fiendish can be written as diabolical)
This is all the clue.
(Other definitions for diabolical that I've seen before include "shocking" , "Disgraceful" , "Demonic" , "evil" , "iniquitous" .)
'fiendish' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for evil that I've seen before include "Morally objectionable behavior" , "Malignant" , "Wicked - social problem" , "Malign" , "Depravity, wickedness" .)
'fiendish' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for devilish that I've seen before include "Very difficult to deal with" , "Very wicked" , "naughty" , "Diabolical" , "Mischievous; rakish" .)
'fiendish' is the definition.
(I know that fiendish can be written as diabolic)
This is all the clue.
(Other definitions for diabolic that I've seen before include "Devilish" , "Extremely cruel" , "Fiendish and cruel, like Old Nick" , "wicked" , "Satanic" .)