criminalize

from WordNet (r) 3.0 (2006)

criminalize
    v 1: treat as a criminal
    2: declare illegal; outlaw; "Marijuana is criminalized in the
       U.S." [syn: {outlaw}, {criminalize}, {criminalise},
       {illegalize}, {illegalise}] [ant: {decriminalise},
       {decriminalize}, {legalise}, {legalize}, {legitimate},
       {legitimatise}, {legitimatize}, {legitimise}, {legitimize}]

from The Collaborative International Dictionary of English v.0.48

criminalize \criminalize\ v. t.
   to declare (an act) to be illegal.

   Syn: outlaw, illegalize, ban.
        [WordNet 1.5]