Leader, boss. A term mainly used to describe one stronger than oneself.
Grunt1: Before we decide to rob this bank, let's wait for my malefactor.
by Guy in the ATM line August 07, 2006
Synonym for "motherfucker" used on social media websites that discourage profanity.
That malefactor re-posted my joke as his own.
by bgparker October 05, 2010