WordWeb Online

1. Contrary to or forbidden by law
   "an outlawed seizure of power";
   - illegitimate, illicit, outlaw, unlawful

1. Declare illegal; ban
   "Marijuana is outlawed in the U.S.";
   - criminalize, criminalise [Brit], illegalize, illegalise [Brit]

See also: illegal

Type of: disallow, forbid, interdict, nix [N. Amer, informal], prohibit, proscribe, veto

Antonym: legitimatise [Brit]

Encyclopedia: Outlawed