Criminal
Villain
Synonyms: Lawbreaker, villain, malefactor, wrongdoer, sinner, juvenile delinquent, thief, armed robber, housebreaker, mugger, fraudster, racketeer, gangster, bandit, bioterrorist, ecoterrorist, agroterrorist, holdupper, con, (old) lag, baddie, yardbird, lighty, tea leaf, malfeasant, infractor, trespasser, transport, defalcato, offender, delinquent, culprit, transgressor, young offender, felon, robber, burglar, shoplifter, rapist, swindler, gunman, outlaw, terrorist, narco-terrorist, cyberterrorist, yakuza, crook, jailbird, lifer, crim, yegg, tief, cracksman, misfeasor, miscreant, trusty, and peculator.
Illicit
Synonyms: Unlawful, against the law, illegitimate, lawless, delinquent, villainous, corrupt, indictable, actionable, unsanctioned, banned, interdicted, wrong, evil, iniquitous, shady, bent, malfeasant, illegal, illicit, lawbreaking, felonious, culpable, nefarious, fraudulent, punishable, unauthorized, outlawed, forbidden, proscribed, bad, wicked, crooked, dirty, and dodgy.
Shameful
Synonyms: Deplorable, shameful, disgraceful, unforgivable, unacceptable, foolish, outrageous, shocking, wicked, immoral, egregious, preposterous, reprehensible, inexcusable, unpardonable, senseless, ridiculous, monstrous, scandalous, sinful, and iniquitous.
Example Sentences
The criminal was arrested last night.
He has a history of criminal behavior.
The documentary focused on criminal psychology.
They discussed the criminal justice system.