Of, or relating to malfeasance or misconduct(adjective)
Someone guilty of such conduct; a malefactor(noun)
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Use "malfeasant" in a sentence
"Local malfeasant with cartoon middle name such as "the librarian", "the landscape gardener" or "the ticket inspector" botches a hit and has to get out of town for a while."
"Too bad CNN and most of the rest of "journalists" are dishonest and malfeasant, and put their political bias ahead of doing their jobs responsibly,"
"Resolved, That the House disapproves of the malfeasant manner in which the Democratic Leadership has thereby discharged the duties of their offices."