unauthorized

from WordNet (r) 3.0 (2006)

unauthorized
    adj 1: not endowed with authority [syn: {unauthorized},
           {unauthorised}] [ant: {authorised}, {authorized}]
    2: without official authorization; "an unauthorized strike";
       "wildcat work stoppage" [syn: {unauthorized}, {unauthorised},
       {wildcat}]

from The Collaborative International Dictionary of English v.0.48

Unauthorized \Unauthorized\
   See {authorized}.

from Moby Thesaurus II by Grady Ward, 1.0

58 Moby Thesaurus words for "unauthorized":
      actionable, against the law, anarchic, anarchistic, anomic, banned,
      barred, black-market, bootleg, chargeable, contraband,
      contrary to law, criminal, felonious, flawed, forbade, forbid,
      forbidden, illegal, illegitimate, illicit, impermissible,
      irregular, justiciable, lawless, nonconstitutional, nonlegal,
      nonlicit, nonpermissible, not permitted, off limits, out of bounds,
      outlaw, outlawed, prohibited, punishable, ruled out, taboo,
      tabooed, triable, unallowed, unapproved, unconstitutional,
      under the ban, under-the-counter, under-the-table, unlawful,
      unlicensed, unofficial, unpermissible, unsanctioned, unstatutory,
      untouchable, unwarrantable, unwarranted, verboten, vetoed,
      wrongful