Definition of malefactor noun from the Oxford Advanced Learner's Dictionary

 

malefactor

 noun
noun
BrE BrE//ˈmælɪfæktə(r)//
 
; NAmE NAmE//ˈmælɪfæktər//
 
(formal) Immoral
 
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a person who does wrong, illegal or immoral things See related entries: Immoral Word Origin late Middle English: from Latin, from malefact- ‘done wrong’, from the verb malefacere, from male ‘ill’ + facere ‘do’.
See the Oxford Advanced American Dictionary entry: malefactor