Outrageous claim over English evil intent (6)
I believe the answer is:
malice
'evil intent' is the definition.
(thesaurus)
'outrageous claim over english' is the wordplay.
'outrageous' indicates anagramming the letters (I've seen this in other clues).
'over' is a charade indicator (letters next to each other).
'english' becomes 'e' (abbreviation).
'claim' anagrammed gives 'malic'.
'malic'+'e'='MALICE'
(Other definitions for malice that I've seen before include "Spite or spleen, perhaps aforethought" , "Hate" , "Spite and rancour" , "Desire to harm others, may be aforethought" , "Malevolence, spite" .)