unofficial (adj.)

• actionable
• affable
• anarchic
• anarchistic
• anomic
• apocryphal
• black-market
• bootleg
• casual
• chargeable
• contraband
• cordial
• criminal
• degage
• easy
• easygoing
• familiar
• felonious
• flawed
• folksy
• gracious
• homely
• homey
• illegal
• illegitimate
• illicit
• impermissible
• informal
• irregular
• lawless
• loose
• natural
• nonlegal
• offhand
• offhanded
• outlaw
• outlawed
• plain
• punishable
• relaxed
• simple
• sociable
• unaffected
• unassuming
• unauthentic
• unauthorized
• unceremonious
• uncertified
• unchecked
• unconfirmed
• unconstitutional
• unconstrained
• unconventional
• uncorroborated
• under-the-counter
• under-the-table
• unlawful
• unproved
• unstudied
• unverified
• unwarrantable
• unwarranted
• wrongful