Synonyms and related words :
actionable, against the law, anarchic, anarchistic, anomic, black-market, bootleg, chargeable, contraband, contrary to law, criminal, felonious, flawed, illegal, illegitimate, illicit, impermissible, irregular, justiciable, lawless, nonconstitutional, nonlegal, nonlicit, outlaw, outlawed, punishable, unallowed, unauthorized, unconstitutional, under-the-counter, under-the-table, unlawful, unofficial, unstatutory, unwarrantable, unwarranted, wrongful