unauthorized (adj.)

• actionable
• anarchic
• anarchistic
• anomic
• banned
• barred
• black-market
• bootleg
• chargeable
• contraband
• criminal
• felonious
• flawed
• forbidden
• illegal
• illegitimate
• illicit
• impermissible
• irregular
• lawless
• nonlegal
• outlaw
• outlawed
• prohibited
• punishable
• taboo
• unconstitutional
• under-the-counter
• under-the-table
• unlawful
• unlicensed
• unofficial
• unsanctioned
• untouchable
• unwarrantable
• unwarranted
• verboten
• wrongful