- The definition of a malefactor is a criminal or someone who does bad things.
An example of a malefactor is a bank robber.
A pair of malefactors.
an evildoer or criminal
Origin of malefactorClassical Latin ; from past participle of malefacere ; from male, evil (see mal-) + facere, to do
- One who has committed a crime; a criminal.
- A wrongdoer or evildoer.
Origin of malefactorMiddle English malefactour, from Latin malefactor, from malefacere, to do wrong : male, ill; see mel-3 in Indo-European roots + facere, to do; see dhē- in Indo-European roots.