criminal, felon, crook, outlaw, malefactor -- (someone who has committed a crime or has been legally convicted of a crime)
Overview of adj criminal
The adj criminal has 3 senses
condemnable, criminal, deplorable, reprehensible, vicious -- (bringing or deserving severe rebuke or censure; "a criminal waste of talent"; "a deplorable act of violence"; "adultery is as reprehensible for a husband as for a wife")
criminal -- (guilty of crime or serious offense; "criminal in the sight of God and man")
criminal, felonious -- (involving or being or having the nature of a crime; "a criminal offense"; "criminal abuse"; "felonious intent")