(a.) Not allowable; as, impermissible behavior or excuses\.

against the law anarchic anarchistic anomic applicable authorized black-market bootleg causidical chargeable competent constitutional contraband contrary to law criminal felonious flawed illegal illegitimate illicit impermissible irregular judicial juridical just justiciable kosher lawful lawless lawmaking legal legislative legit legitimate licit litigable litigant litigatory litigious nonconstitutional nonlegal nonlicit outlaw outlawed punishable rightful sanctioned statutory triable unallowed unauthorized unconstitutional under-the-counter under-the-table unlawful unofficial unstatutory unwarrantable unwarranted valid within the law wrongful